Without the peak of hormones around day 14 of the menstrual cycle, ovulation wouldn't occur as this process is triggered by the rise in specific hormones. As a result, it would prohibit the release of a mature egg for potential fertilization.
Explanation:The context of this question is related to the female menstrual cycle. Hormones play a vital role in regulating this cycle. Around day 14 of a typical 28-day menstrual cycle, levels of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) peak to stimulate ovulation, which is the release of a mature egg from the ovary. If these hormone levels did not reach their peak, ovulation would not occur. Therefore, option B, 'Ovulation would not happen', appears to be the correct answer. It's essential to note that without ovulation, pregnancy is not possible because there is no egg for sperm to fertilize.
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Une theory proposes that selecting for "pretty boys" isn't just superficial and can benefit a
species. Explain this theory.
Final answer:
The selection for "pretty boys" based on the good genes hypothesis suggests that females choose mates with impressive traits signaling genetic superiority, ensuring the advantageous genes pass to their offspring. This strategy, along with the Fisherian runaway model, contributes to the species' evolutionary success.
Explanation:
The theory that selecting for "pretty boys" isn't just superficial and benefits a species relates to the good genes hypothesis. This hypothesis proposes that males develop impressive ornaments, such as bright feathers or large antlers, to showcase their efficient metabolism or their ability to fight disease. This signals their genetic superiority, which they can then pass on to their offspring. Females are inclined to choose males with the most impressive traits, ensuring that their progeny inherits these advantageous genes. Despite the potential reduction in the number of offspring from being selective, choosing partners based on these traits can lead to fewer, yet healthier, offspring. This strategy may increase their chances of survival, supporting the species' continued success.
In addition to the good genes hypothesis, Ronald Fisher's Fisherian runaway model suggests that sexual selection for certain traits, such as those indicating genetic fitness, further drives evolution. This model explains how sexual preference can lead to the exaggeration of these traits over generations, further influencing mate choice.
What do the variations in the lemming population illustrate
Answer:
the impact that population cycles have on predators
Explanation:
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Mom's genotype is Hh and Dad's hair isn't
brown. Brown hair is dominant to red hair. Use the letter h for hair. What are the probabilities and
ratio for their offspring? (some info is missing)
As the mother is having Hh genotype, and father is having hh genotype as his hair are red. So, the genotype of the offspring will be Hh and hh.
What is genotype?An organism's genotype is made up of all of its genetic components. The alleles or variations that an individual carries in a specific gene or genetic region are also referred to as the genotype.
The type of variant present at a specific locus (i.e., region) in the genome is scored by what is known as a genotype. Symbols can be used to symbolize it.
The term "genotype" broadly refers to an organism's genetic make-up; in other words, it characterizes an organism's whole gene pool.
Given that the mother has Hh genotype and father has hh genotype and have red hair, respectively. Thus, the children will have the genotypes Hh and hh.
Thus, as the ratio is 1:1, means there will be 50% Hh genotype and 50% hh genotype.
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What are POPs?
POPs are 1 _____
organic pollutants. An example of a POP is 2 ______.
1. persistent
1.short-lived
1.permanent
2. sulfur dioxide
2.nitrogen oxide
2.DDT
Persistent Organic Pollutants (POPs) are harmful chemicals, such as DDT, that are persistent, bioaccumulative, and toxic, posing long-term risks to health and the environment.
Persistent Organic Pollutants (POPs) are a group of organic chemicals that have been widely used as pesticides or industrial chemicals, such as DDT. They are characterized by three main properties: they are persistent, meaning they last a long time in the environment and resist breakdown for years or even decades; they are bioaccumulative, accumulating in the fatty tissues of animals and humans, especially from the food they consume and as they move up the food chain.
Their concentration levels can increase exponentially; and they are toxic, causing a variety of health effects such as impacts on the nervous system, reproductive and developmental issues, immune system suppression, cancer, and endocrine disruption. Most POPs have been banned worldwide due to their harmful effects, although some uses remain permitted under specific conditions such as using DDT for malaria control.
What options are available in the public policy domain of sustainability?
In the public policy domain of sustainability, federal, state, or city agencies can either 1._____
sustainability through proactive zoning laws or 2.______ it through,for example,strict emission controls.
1. support
1. ignore
1.discourage
2.sponsor
2.disregard
2.enforce
Answer:
1. support
2. enforce
Explanation:
Public policy domain of sustainability is a framework that deals with sustainability issues. There are three major domains of sustainability including the economy, the environment, and the social. These all the domains are connected with each other and support the sustainability issues.
Government or other federal agencies play important role in order to support the sustainability policy and to achieve the goal of sustainaibility through proactive zoning laws. for example: city agencies can improvise wastewater management, developing water quality policy frameworks and checking the pollutants in the environment.
The Government or state, or city agencies can also enforce, some of the policy for sustainability goal. For example: strict laws for emission control, in which government make strcit rules for regulating auto emission in order to control air pollution.
Hence, the correct options are 1. support and 2. enforce.
Answer:
Explanation:
Support
Enforce
Changes to land that contain some soil and life
A)Habitat
B)Niche
C)Primary succession
D)Secondary succession
Answer:
D, Secondary Succession
Explanation:
The answer is D because a habitat is an organism's home, a niche is the organism's role, and primary succession is when there are changes to land that contain no soil or life. Hope this helped :3
A) Describe the first interaction that triggers signaling to begin in a target cell.
B) Identify a dependent variable in the experimental design. Identify a negative control for the effects of hormone addition. Identify a likely reason why the researchers continued their experiment for 240 minutes.
C) Describe the hormone and signaling protein combination that produced the greatest and most prolonged response. For the phosphorylation STAT5 response that reached 100 percent at 10 minuted in Figure 1A, calculate the rate of decrease (percent decrease per minute) in the detected level of phosphorylated STAT5 from 10 to 30 minutes.
D) The researchers claim that the similar regulation of carbohydrate metabolism by hepatocytes when the cells are treated with growth hormone or insulin results from the activation of different signaling pathways. Use the data from the researchers’ experiment to support their claim.
Signaling in a target cell is triggered by the binding of a molecule to a receptor, initiating a signal transduction pathway. In an experiment, the dependent variable is measured and a negative control is taken without the addition of the hormone. Specific data is needed to describe the greatest response or calculate the rate of decrease.
Explanation:The first interaction that triggers signaling in a target cell usually begins with a molecule, often a hormone or neurotransmitter, binding to a receptor protein on the cell surface. This causes the receptor to change shape, triggering a series of biochemical reactions inside the cell that forms a 'signal transduction pathway'. This can result in a variety of cell responses, including changes in gene expression, cell division, or cell death.
A dependent variable in an experimental design is an outcome, or response, that the researcher measures. In the context of a cell signaling experiment, this could be the level of a particular protein or the rate of a biochemical reaction. A negative control for hormone addition could involve conducting the same experiment without adding the hormone, to ensure that any changes observed are truly due to the hormone and not other factors. Continuing the experiment for 240 minutes was likely done to observe the entire response of the cell and to see whether the response continues, increases, decreases, or has a delay.
Without specific data, it's not possible to describe the hormone and signaling protein combination that had the greatest response or to calculate the rate of decrease in phosphorylated STAT5. You would need numerical data to perform these calculations.
If the researchers claim that similar regulation of carbohydrate metabolism occurs with growth hormone and insulin due to activation of different signaling pathways, look for experimental data showing different responses or outcomes when cells are treated with these hormones. This could include different patterns of protein expression, signaling molecules used, or cellular responses.
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Who came up with the idea of natural selection
Charles Darwin and Russel Alfred came up with the idea of natural selection.
In a typical energy pyramid about 10% of the available energy is transferred from one trophic level to the next. Consider an area in which the energy production of the autotrophs equals 200 Kcal/m2/year. What is the amount of energy available to secondary consumers in this energy pyramid?
A) 1 Kcal/m2/year
B) 2 Kcal/m2/year
C) 10 Kcal/m2/year
D) 15 Kcal/m2/year
Answer:
sooo..... b)?
Explanation:
Consider an area in which the energy production of the autotrophs equals 200 Kcal/m2/year. What is the amount of energy available to secondary consumers in this energy ... Assuming that the sun transmits 6,000,000 kcal of energy to an area, calculate the amount of energy passed to the next trophic level.
What type of genetic variation is demonstrated below?
Question 4 options:
codominance
mix dominance
sharing dominance
incomplete dominance
Which physiological systems are responsible for movement?
A. skeletal and muscular
B. lymphatic and endocrine
C. nervous and reproductive
D. respiratory and circulatory
Answer: A Skeletal and muscular system
Explanation: This is because the muscles in the body are responsible for movement while the skeletons are responsible for keeping the muscles together to remain upright.
Final answer:
The skeletal system and muscular system are responsible for movement, with regulatory control by the nervous system. The correct option is A.
Explanation:
The physiological systems responsible for movement are the skeletal system and the muscular system. The skeletal system provides the structure and support for the body, allowing for movement when the muscles contract and relax. The muscular system is composed of muscle tissue that can contract, thereby enabling movement and stability along with maintenance of posture. These systems work in conjunction with the nervous system, which controls both voluntary and involuntary movements through signals sent to the muscles.
Learning about the parts of an atom is important because______.
A) It can help us create a better model of an atom.
B) It can help us create new elements.
C) It can help us study how cells in the body functions.
D) It can help us explain the universe.
Answer:
B) It can help us create new elements
Explanation:
the purpose Knowing the parts of an atom and the properties of the electron orbital shells is important because it provides a foundation for further learning in Physical Science.
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The answer is B (: enjoy
help please quickly
Answer:
adding a gene
Which of the following is most likely to happen if the cell membrane does not function properly?
The cell will not be able to store waste.
The cell will not be able to eliminate waste.
The cell will absorb oxygen during photosynthesis.
The cell will absorb carbon dioxide during respiration.
Quick
Answer:
B
Explanation:
The cell will not be able to eliminate waste.
An embryo develops in the
A.Uterus
B.Cervix
C.Ovary
D.Vagina
The correct choice is A.
After the first days of the baby's development in its zygote stage, it remains in the mother's uterus as an embryo. It will remain in the uterus until it is born.
Answer:
A. uterus
Explanation:
There are a few stages of embryo development:
1. Fertilization: this is where the female gamete (egg) meets with the male gamete (sperm) and they form a zygote
2. Blastocyst development: this is where the zygote divides into a ball of cells that eventually becomes the embryo inside a structure called the blastocyst; the blastocyst then travels up to the uterus.
3. Embryo development: this is where the embryo truly starts to develop in the uterus, growing the crucial body parts
Please help!! Mason drew the cladogram shown.
Which statements best describe the cladogram? Select THREE options.
a) Reptiles are the most primitive.
b) Birds and reptiles are most closely related.
c) Frogs are more closely related to fish than birds.
d) Frogs are more closely related to birds than fish.
e) Fish are the most primitive.
Answer:
B, D, E
Explanation:
A would be wrong because reptiles are latest organism and primitive means first, B would be correct because birds and reptiles are in the same branch, C would be wrong because frogs and fish only have fish genes in common, D would be correct because birds and frogs have frog genes and fish genes, E is corrrect because fish were the first organisms to appear... Hope its correct
Many uses of land (logging, mining, farming etc.) call for the removal of natural vegetation to expose the soil. This could make the soil more vulnerable to ___.
Answer:
erode.
Explanation:
Erosion happens when the soil has nothing on it's surface like trees, shrubs and etc.
Prairie dogs, snakes, and grass make up a level of ecological organization called a(an) ______
Answer: community
Explanation:
Because of the unique position of the Earth in the solar system, life has developed due to the presence of -
A. salt
B. liquid water
C. helium
D. volcanoes
Answer:
B) Liquid water
Correct me if i'm wrong but water is one of the necessary resources for life.
Here you go!!
Because of the unique position of the Earth in the solar system, life has developed due to the presence of -
A. salt
B. liquid water
C. helium
D. volcanoes
Answer
Because of the unique position of the Earth in the solar system, life has developed due to the presence of liquid water.
Which occurs during translation but not during transcription?
Answer: The process wherein the DNA is copied to RNA is called the transcription and translation is when RNA is used to produce protein.
Explanation:
Select the correct days.
Rachel and her team will conduct canopy fogging to monitor the insect population in an area. Looking at the weather forecast, identify the
days that are ideal for Rachel's team to conduct the research.
Sunday, Monday, and Saturday are ideal for Rachel's team to conduct the research.
What is a weather forecast?Here are some details and considerations that should be kept in mind while deciding which days would be suitable for her team to carry out the experiment that involves canopy fogging:
1. One method used to capture insects for the study of forest insects is canopy fogging. Basically, it entails applying a substance, like pyrethrine, that exclusively affects insects.
2. This chemical is sprayed in the form of an aerosol with the help of a blower and a sprayer, which might be a machine.
3. This method is mostly used to capture live insects for research and study.
4. Windy and/or rainy days are not typically used for canopy fogging. The fogging chemical's effectiveness would be hampered by wind and rain. The minuscule chemical spray particles would be carried away by the wind. The particles may also be removed by rain, and as rain can accompany storms, wind is also likely to be present.
5. Canopy fogging is possible under clear, sunny conditions without any wind or storms.
Due to the lack of rain and/or wind on these days, Monday, Saturday, and Sunday should be the best days for carrying out canopy fogging.
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Answer:
hope this helps.
Explanation:
What is an unifying characteristic of all crustaceans?
Answer:
A hard exoskeleton made of calcium - no internal skeleton. The head has two compound eyes, two pairs of antennae, and three pairs of mouthparts. A pair of green glands excrete wastes near the base of antennae. The abdominal segments have swimmerets (swimming legs)
Explanation:
which is a characteristic of something in the domain archaea
Answer:
Whereas both bacteria and archaea lack a nuclear envelope and membrane-bound organelles, archaea and eukaryotes have similarities beyond those seen between bacteria and eukaryotic cells. Bacteria have the macromolecule peptidoglycan in their cell walls; archaea and eukarya lack this polymer.
Explanation:
Answer:
unicellular ape.x
Explanation:
Which of these conclusions can be made from the data in the table?
Cellular respiration produces nitrogen.
Cellular respiration uses oxygen.
Cellular respiration produces carbon dioxide.
Photosynthesis produces oxygen.
Answer: cellular respiration uses oxygen and cellular respiration produces carbon dioxide
Explanation:
Answer:
cellular respiration uses oxygen and cellular respiration produces carbon dioxide
Explanation:
Each year, as winter approaches, some species become inactive. They may sleep and use their body’s fat for energy during the cold season.
migration
hibernation
imprinting
conditioning
Answer:
hibernation
Explanation:
Objects that are further away from one another, have
more gravity?
True
False
Four elements-chlorine (Cl), potassium (K), argon (Ar), and radium (Ra) according to the periodic table which of these elements has atoms with the most valence electrons?
A.Potassium
B.Chlorine
C.Radium
D.Argon
Changes to the global climate could include
a. changes to temperature
b. changes to pressure
C. changes to precipitation
d. all of the above
Please select the best answer from the choices provided
Answer:
d. all of the above
Explanation:
please give brainiest hehe
its ok if not
have a great day good luck
Changes to the global climate could include changes in temperature, pressure and precipitation. Therefore, option (D) is correct.
Global climate refers to the long-term distribution of heat and precipitation on Earth's surface. Heat from the sun keeps the World's typical temperature at around 60°F (16°C), inside a reach that takes into consideration natural life.
Temperature and weather patterns that change over time are referred to as climate change. Although these shifts may be natural, human activities have been the primary cause of climate change since the 1800s, primarily through the burning of fossil fuels (such as coal, oil, and gas).
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Which of the following is a way that scientific advancements have benefited society?
a. increased energy efficiency
b. increased resource use
C. increased urbanization
d. changes in the global climate
Please select the best answer from the choices provided
Answer:
The best answer is A-energy efficiency
Explanation:
Energy efficiency is a positive contribution made by science to benefit the user (less costs of electricity) and the planet.
Brainliest!!!!
Help me
Graph one shows a sudden drop in fermentation after the evolution of the first living cells. Describe why this change occurred and how it may relate to temperature.
after the evolution of the first living cells, fermentation wasn't needed, because aerobic respiration was now doable, since there was more oxygen in the air now. also, as the temperature increases, it becomes more energy consuming to conduct fermentation over aerobic respiration.
Hope this helps :)