It is Exothernmy. I took the test just now.
Recessive genes are expressed under which of the following conditions?
Recessive genes are expressed when an organism inherits two copies of a recessive allele for a specific trait only in the absence of a dominant allele. This concept, first developed by Gregor Mendel, helps us predict how genes can be inherited and expressed.
Explanation:Recessive genes are expressed when an organism inherits two copies of a recessive allele for a specific trait. This concept of dominant and recessive genes was first proposed by Gregor Mendel, a scientist renowned for his work on pea plants. In his study, Mendel used big and small letters (like TT, tt, and Tt) to represent dominant and recessive alleles.
For instance, in the case of Mendel's pea plants, a tall pea plant could be homozygous (TT) or heterozygous (Tt), both resulting in a tall plant due to the presence of a dominant allele. However, a dwarf pea plant is always homozygous (tt) as its dwarfism can only be expressed in the absence of the dominant tall gene.
To answer the question, recessive genes are expressed under the condition, 'Only in the absence of dominant genes for the same trait' (Option D).
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What happens to density, temperature and pressure as you go deeper into the Earth?
A)all 3 increase
B)all 3 decrease
C)only density and pressure increase
D)only density and pressure decrease
A mountain chain of sedimentary rock may form as a result of a Blank Space __________ .
PLEASE HELP ME!!!!
Answer is : Convergent boundary of two continental crusts
what is 290129028320832835 times 1
A beryllium atom has 4 protons, 4 neutrons, and 4 electrons. What is the Beryllium atom's atomic number?
A/4, because it has 4 protons
B/4, because it has 4 electrons
C/4, because it has 4 neutrons
D/8, because it has 4 protons and 4 neutrons
The Calvin Cycle occurs..
A) in the granum of the thylakoid membranes of the chloroplast.
B) in the stroma surrounding the inner membrane of the chloroplast
C) in the stroma surrounding the thylakoid membranes of the chloroplast
D) in the granum inside the inner membrane of the choloroplast
what is true of a rock layer that has had another rock layer deposited on top of it?
why doesn't science offer conclusive proof phenomena
Why is most of the mass of the atom in the nucleus?
A.Protons are located in the nucleus of the atom, and they are responsible for the mass of the atom.
B.Protons and electrons are located in the nucleus of the atom, and they are responsible for the mass of the atom.
C.Neutrons are located in the nucleus of the atom, and they are responsible for the mass of the atom.
D.Protons and neutrons are located in the nucleus of the atom, and they are responsible for the mass of the atom.
Why do cats claw you when they try to show you love?
Cats often claw gently while showing affection, a behavior stemming from kittenhood when they kneaded their mother's belly for milk. As adults, kneading can also mark territory and maintain claw health. Overstimulation may cause more harmful clawing, so understanding cat body language is crucial.
When cats claw at their human companions in a gentle manner, it is often a sign of affection. This behavior, known as 'kneading', involves the cat pushing in and out with its paws, sometimes with extended claws. This action originates from kittenhood when they knead their mother's belly to stimulate milk flow. As adult cats, this comforting behavior is associated with the contentment they felt as kittens.
Cats also use their claws to communicate and explore their environment. They have scent glands between their paw pads, so when they scratch or knead, they are marking their territory. Additionally, scratching helps cats to maintain the health of their claws by removing the outer layers and stretching their muscles.
However, if a cat is actually clawing in a way that causes harm, it can be a sign of overstimulation or distress. Recognizing a cat's body language, such as a twitching tail or flattened ears, can help avoid such situations.
Active transport occurs when _____ is used to move substances through a membrane.
A)osmosis
B)energy
C)diffusion
D)chlorophyll
The ____________ (size/color) of crystals formed depends on the speed of evaporation.
The right answer is the size.
Crystallization is the operation that consists, of a solution (solvent + solute) or a molten solid, to form a crystallized solid. The solute crystallizes in general in a predefined geometrical form (cubic, face-centered cubic, etc.), including or not solvent molecules (eg pure NA2SO4 or [Na2SO4, 10H2O]). The form or chemical formula of the crystals may depend on the crystallization temperature.
There are two ways of crystallization: The dry way and the wet way (in solution)
In crystallization in solution: the solute is initially in the liquid phase in a solvent. It is crystallized (solidification ordered according to a regular structure) within the solution either by solvent evaporation, or by cooling the solution, or both.
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Which part of the mantle is still a solid but flows like a thick, heavy liquid?
a lithosphere b crust c asthenosphere d core
The correct answer is actually C. Asthenosphere
Sickle cell disease in an inherited blood disorder. It is a recessive trait. That means you can carry one recessive allele for the disease and not have the symptoms. In this case, if you were a carrier and did not have the disease, your genotype for sickle cell would be A) dominant. B) heterozygous. C) homozygous. D) sex-linked.
The right answer is B) heterozygous.
Sickle cell disease is a genetic, inherited disease affecting red blood cells, in which a child can be ill only if both parents are transmitters (at least heterozygous, carrier of the trait), ie asymptomatic carriers of the gene for sickle cell disease. It is a hereditary autosomal recessive disease, that is, it affects girls as well as boys, and only manifests itself when one carries two genes of the disease (homozygous). This disease is genetic and therefore not contagious.
Which life cycle describes a plant that reproduces asexually and sexually? A. egg + sperm → embryo → adult with all its chromosomes → gametes → adult; gametes produce an organism with half the chromosomes B. egg + sperm → zygote → adult with all its chromosomes → spores → adult; spores produce an adult with half its chromosomes C. egg + sperm → embryo → adult with all its chromosomes → gametes → adult; gametes produce an organism with all its chromosomes D. egg + sperm → zygote → adult with all its chromosomes → spores → adult; spores produce an adult with all its chromosomes
If a rock was exposed to high temperature pressure what would most likely happen to it?
How are space shuttles and underwater vehicles similar?
a They both were invented during the 19th century.
b They are both examples of science influencing technology.
c They both had negative impacts on scientific study.
d They both take scientists to places they could not travel to on their own
why do plants need to produce seeds before the first frost
Plants produce seeds before the first frost to ensure survival through winter and facilitate germination in favorable conditions. Vernalization often required for seed dormancy break prevents premature sprouting. This strategy is vital for annuals and biennials which only survive freezes in seed form.
The seed is typically a dormant embryo, encapsulated in protective coats, with enough stored food to last through periods when conditions are less than ideal. This state allows seeds to remain viable over winter, delaying germination until conditions improve in the spring. Additionally, this dormancy helps to stagger germination times, contributing to diversity within the species and dispersal over time.
Some seeds require vernalization, which is exposure to cold temperatures to break dormancy. This process happens during winter and prevents seeds from sprouting during unseasonably warm periods that could be followed by a killing frost. Many plants have developed mechanisms to inhibit their seeds from germinating in conditions that do not favor growth, such as during droughts or in low-light environments.
This strategy is particularly important in annual and biennial plants, like beans, cereal grains, and some weeds, which are capable of surviving freezing temperatures only in seed form. Once their parent plants die in the fall, they depend solely on their seeds for continuation. Thus, timing seed production before the first frost is crucial for plant species to successfully carry on to the next growing season.
The process of _____________ is modeled in the plant cell diagrams seen here
The process of osmosis is modeled in the cell diagrams seen here.
The til always leans toward the sun it takes 365 days for earth to rotate one time so when we are on the side towards the sun it is summer when we are on the side away from the sun it is winter. This is not correct how can I fix it?
The Earth's seasons are caused by the tilt of its axis, not by the Earth's distance from the Sun. It takes 365.25 days for the Earth to complete its revolution around the Sun. During this revolution, the tilt causes different regions of the Earth to receive varying amounts of sunlight, leading to the seasons. For example, when the Northern Hemisphere is tilted towards the Sun, it experiences summer, and when tilted away, it experiences winter.
The 23.5° axis tilt of Earth is responsible for the seasonal changes we experience. In the summer months, the hemisphere tilted towards the Sun gets more direct sunlight and longer days, resulting in warmer temperatures. Conversely, during the winter, the same hemisphere is tilted away from the Sun, leading to shorter days with less direct sunlight and cooler temperatures. Rotation refers to Earth spinning on its axis, which occurs once every 24 hours, resulting in day and night, while revolution is Earth's orbit around the Sun, causing the seasons. During equinoxes, every place on Earth experiences approximately equal day and night because the Earth's axis is not tilted towards or away from the Sun.
Which kind of teeth do mammals use to grind their food?
A.
canines
B.
molars
C.
incisors
D.
fangs
What is the difference between bacterial reproduction and viral replication?
24 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
What is the correct interpretation of this diagram?
A. Up and down all forces are balanced. The force toward the right is greater than the force toward the left. The object will move toward the right.
B. Up and down forces are balanced. The object does not move.
C. Up and down forces are balanced. The force toward the right is greater than the force toward the left. The object will move toward the left.
D. Forces from the left and from the right are unbalanced. The object moves left.
A. Is the answer Up and down all forces are balanced. The force toward the right is greater than the force toward the left. The object will move toward the right.
Answer:A. Is the answer Up and down all forces are balanced. The force toward the right is greater than the force toward the left. The object will move toward the right.
Explanation: Pls give me brainliest also I did the quiz
What is the DNA in the G1 stage called. What does it's look like?
During G1, the DNA molecule is called CHROMATIN. This molecule (DNA) looks like tangled strands of spaghetti.
The cell cycle has two main phases: interphase and M (mitosis) phase.The interphase can in turn be divided into three phases: Growth 1 (G1) phase, Synthesis (S) phase and Growth 2 (G2) phase.During interphase, DNA is wrapped as chromatin fibers, which are composed of both DNA and associated proteins called histones.During this phase (interphase), chromatin looks like spaghetti because there is no obvious pattern of organization.The nucleosome is the functional unit of chromatin. A nucleosome consists of 147 base pairs of DNA wrapped around an octamer of histones.During the M phase, chromatin condenses to form chromosomes.In conclusion, during G1, the DNA molecule is called CHROMATIN. This molecule (DNA) looks like tangled strands of spaghetti.
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Explain what happens to the average kinetic energy, thermal energy, and temperature of a substance when the particles in the substance slow down.
The kinetic energy, thermal energy, and temperature of a substance DECREASE when the particles in the substance slow down.
What is kinetic energy?Kinetic energy can be defined as energy in motion (movement), which is contrary to potential energy.
A material has kinetic energy when its constituent particles are in motion (i.e., they are in movement).The kinetic energy increases the temperature of a given object and therefore thermal energy is a type of kinetic energy.In conclusion, the kinetic energy, thermal energy, and temperature of a substance DECREASE when the particles in the substance slow down.
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When we say that an experiment is controlled, we mean that _____.
A.
the outcome is certain
B.
the theory has already been supported
C.
there is only one theory being tested by the experiment
D.
there is only one difference between experimental groups
Answer:
Option C
Explanation:In a controlled experiment, only one independent variable is the only factor that is to be adjusted, while the dependent one acts as the factor that the independent variable will affect.
A generator converts mechanical energy into _____________________ energy.
Certain molecules, found in all organisms, have functions that are necessary for life’s processes to occur. Which of the following is a function of both lipids and carbohydrates?
A) Both can be found in a variety of shapes and formations and as a result have numerous functions.
B) Both are found in the cell membrane and assist in moving materials in and out of the cell.
C) Both are important in determining the genetic makeup of an organism.
Eliminate
D) Both are sources of energy.
Both lipids and carbohydrates function as sources of energy in all living organisms.
Carbohydrates are readily broken down to release energy for metabolic purposes in cells in a process known as respiration.
Lipids, on the other hand, serve more as energy reserves for organisms. In order to extract the energy in lipids, they must first be hydrolyzed into their components - fatty acid and glycerol. the resulting fatty acid is then oxidized into acetyl CoA and then enters Kreb's cycle.
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The heat transfer depicted in the image is MOST likely
Answer:
The correct answer is Convection.
Explanation:
I took the test, chose circulation and got it wrong. The answer is convection.
The primary function of the chromosome is to–
A. store the genetic instructions needed to specify traits.
B. release energy by breaking down food molecules.
C. transport waste materials rapidly out of the cell.
D. relay messages between different cells in animals.