Examples of evolution include the variation in the peppered moth's color, the similar winter adaptations of the unrelated arctic fox and ptarmigan, and changes in the beak shapes of Galápagos finches due to natural selection.
Explanation:Examples of evolution can be seen in various forms. One of the classic examples often used in biology textbooks is the peppered moth. Changes in the population's allele frequencies in light and dark forms, which represents small-scale evolution, could be traced back to this species.
Another example of evolution is the evolutionary convergence observed in unrelated species sharing the same environments. The arctic fox and ptarmigan, though not related, adapt to white phenotypes during winter to blend with the snow and ice, a testament to similar selection pressures.
Additionally, the Galápagos finches offer an illustration of evolution through natural selection. Shifts in the distribution of beak shapes from one generation to the next, caused by variations in environmental conditions, show how traits passed on can influence survival and reproduction.
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A sperm cell is produced by spermatogenesis. In order for the sperm cell to achieve a diploid state, what must occur?
A) The sperm cell must undergo meiosis.
B) The sperm cell must undergo mitosis.
C) The sperm cell must fertilize an egg.
D) The sperm cell must divide by cleavage.
Write the complementary dna strand for AATGAATAGCTAGCTT
Which of the following measurements is used to compare the difference between objects in the solar system?
which pigment, only present in Plants, makes photosynthesis possible?
A. carbon dioxide
B. Glucose
C. Chlorophyll
D. ATP
Plz explain of you can
Answer:
c: chlorophyll
Explanation:
took the k12 quiz
In sunflowers, tall stems (T) is a dominant trait while short stems (t) is a recessive trait. In a field of 1000 sunflowers, 820 are tall plants and 180 are short. Which statement BEST describes the genotype of the sunflowers in the field?
A)About 50% are homozygous for tall stems.
B)About 75% are homozygous for tall stems.
C)About 50% are homozygous for short stems.
D)About 50% are heterozygous for tall stems.
Investigators studied the effect of temperature on the rate of biological enzyme action. The experimental data is summarized in the graph. The investigators concluded that the enzyme works best at human body temperature. What part of the data validates their conclusion? A) The graph peaks at 37°C and dips beyond this point. B) The graph shows an exponential rise in reaction velocity. C) The graph shows that the reaction is complete at 60°C. D) The reaction is seen for temperatures between 0°C and 60°C.
A) The graph peaks at 37°C and dips beyond this point.
A mutation occurs in a percentage of male birds that causes them to develop dull coloring. Out of 52 dull-colored birds, 13 birds successfully mated. Based on these numbers, what’s the probability that an individual dull-colored bird will successfully mate? The probability that an individual dull-colored bird will successfully mate is percent.
Probability of an individual dull-colored bird mating successfully equals the number of birds that successfully mated divided by the total number of birds
The answer is 25%
Answer:
25
Explanation:
two students used two balls to make a scale model of the earth/moon system. the earth model was 24 cm in diameter. when they finished, what were the final dimensions of the model system
Sexual reproduction is associated with _____.
mitosis
meiosis
binary fission
Sexual reproduction is associated with meiosis, a type of cell division that results in four daughter cells with half the parent cell's chromosomes. Mitosis and binary fission are associated with asexual and simple organism reproduction, respectively.
Explanation:Sexual reproduction is closely associated with meiosis. Meiosis is a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell. This process is crucial in sexual reproduction as it ensures genetic diversity. In contrast, mitosis is associated with asexual reproduction while binary fission is typical of simple organism reproduction, like bacteria.
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HELP ASAPPPP PLZZZ
What does weight measure?
Quantity of matter in an object
How much space an object takes up
Force of gravity acting on an object
How long it takes for an event to occur
What is the result of mutation during meiosis
A- it organism will not be able to form some organs
B- The organism will not be able to live
C-The offspring of the organism will have a mutation
D- there will be silent mutations that will have no effect
yep he right is c bro
The result of mutation during meiosis is that the offspring of the organism will have a mutation. Thus, the correct option for this question is C.
What is Mutation?The mutation may be defined as a type of sudden, stable, and inheritable change in the genetic material of an organism. The agents that eventually cause a series of mutation within genetic material is known as mutagens. An organism that has undergone an event of mutation is known as a mutant.
Meiosis may be characterized as a type of cell division through which four haploid daughter cells are formed which are genetically unidentical to their parental cell. The gametic cells (sperm or egg cells) generally follow this mode of cell division and mutation in these cells will lead to mutation in the complete organism.
Therefore, the result of mutation during meiosis is that the offspring of the organism will have a mutation. Thus, the correct option for this question is C.
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Which strand of mrna has the bases guanine-adenine-cytosine. Which amino acid corresponds to these bases
A- gln
B- Asp
C- Arg
D- cys
Answer:
The answer is: B- Asp.
Explanation:
Aspartic acid, symbols Asp, in RNA is encoded by the GAU or GAC codons.
The answer is: B- Asp.
The conditions in a local area include temperature, atmospheric pressure, wind, and humidity. The combination of all of these conditions determines
A. the time of day
B. the weather in the area
C. the geology in the area
D. the climate in the area
The conditions in a local area include temperature, atmospheric pressure, wind, and humidity. The combination of all of these conditions determines the climate in the area. Hence, option D is correct.
What is climate?Climate describes the long-term weather patterns in a particular region. Climates in different areas can vary.
The polar, temperate, and tropical zones are neatly divided into three different climate zones by the three-cell convection model of each hemisphere.
The climate on Earth has undergone numerous significant changes. These have been brought on by a variety of natural phenomena, such as variations in the sun's activity, volcanic emissions, changes in the Earth's orbit, and carbon dioxide concentrations (CO2). Therefore, option D is correct.
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Why are thunderstorms so common?
Within a species of short, ground-dwelling animals, two parents produced a group of offspring that were 1 cm taller than they were. These offspring were able to reach slightly higher vegetation than their parents and other members of the species. When the offspring grew up, they produced new offspring who were also slightly taller and could also reach the higher vegetation. This process continued over several generations such that offspring became gradually taller with time. Eventually, after many generations, all members of the species were at least 20 cm taller than the original two parents that produced the slightly taller offspring. What does this illustrate? A. Ground-dwelling animals would survive better if they evolve to be shorter. B. Slight differences between parents and offspring can eventually result in future generations that are very different from their ancestors. C. Biological change does not apply to ground-dwelling animals. D. Only major differences between parents and offspring can result in future generations that are very different from their ancestors.
Which statements correct
how does autotroph get its food?
it absorbs food from its environment.
it makes its own food through cellular respiration.
it makes its own food.
A genetic mutation occurs in a rabbit's muscle cell. This genetic mutation will be passed on to A. the cells of the rabbit's offspring. B. cells that are produced when the mutant cell divides. C. the cells that are next to the mutant muscle cell. D. the existing cells in the rabbit's body.
A genetic mutation in a rabbit's muscle cell will be passed on to cells that are produced when the mutant cell divides, as somatic cells, like muscle cells, transmit their genetic information to their daughter cells through mitosis. The correct answer is option B).
If a genetic mutation occurs in a rabbit's muscle cell, which is a type of somatic cell, the correct answer to where this mutation will be passed on is to B. cells that are produced when the mutant cell divides. This is because somatic cells divide through a process called mitosis, where genetic information is copied, or replicated, and passed on to the daughter cells.
It is important to note that the mutation will not be passed on to the rabbit's offspring (Option A) because it is not in a germ cell (i.e., sperm or egg cells), which are involved in reproduction. Mutation transmission to the cells next to the mutant cell (Option C) or to existing cells in the rabbit's body (Option D) does not happen because these cells do not receive DNA from the mutated cell directly.
How are DNA and RNA molecules alike? A) They are both double stranded. B) They both contain nitrogen bases. C) Their nitrogen bases always pair A - T and C - G. D) They are found in the nucleus and at the ribosomes. Eliminate
PLEASE HELP ME YOU WOULD BE A LIFE SAVER!!!!!!!!!!!!!!!!!!!!
Energy is transferred when
species change
species adapt
species eat
populations evolve
Which of the following is not a sign of a chemical change?
Color change
Odor production
Heat production
Shape change
Match the part of the cell to its correct function.
1.
vacuole
2.
cell membrane
3.
cytoplasm
4.
mitochondrion
5.
Golgi body
6.
cell wall
7.
lysosome
8.
chloroplast
9.
endoplasmic reticulum
10.
DNA
11.
ribosome
12.
nucleus
a.
contains instructions on how the cell functions.
b.
controls the activities of the cell.
c.
supports and protects the organelles in the cell.
d.
strong layer around plant cells.
e.
controls what goes in and comes out of a cell.
f.
helps in the production and movement of materials.
g.
packages and distributes materials in and out of cells.
h.
supplies energy that cell uses.
i.
produces proteins for the cell.
j.
converts energy from the sun to food energy.
k.
serves as a temporary storage area for nutrients and waste materials.
l.
breaks down waste materials.
The parts of the cell together with their correct functions would be as follows:
Vacuole: serves as a temporary storage area for nutrients and waste materials.Cell membrane: controls what goes in and comes out of a cell.Cytoplasm: supports and protects the organelles in the cell.Mitochondrion: supplies energy that cell uses.Golgi body: packages and distributes materials in and out of cells.Cell wall: strong layer around plant cells.Lysosome: breaks down waste materials.Chroloplast: converts energy from the sun to food energy.Endoplasmic reticulum: helps in the production and movement of materials.DNA: contains instructions on how the cell functions.Ribosome: produces proteins for the cell.Nucleus: controls the activities of the cell.The cell consists of organelles that are specialized for specific functions. They all work together for the overall function of the cell.
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Dr. Levitt is conducting a descriptive experiment where she is counting the numbers of chicks that hatch in one season for a particular species of bird. What is a major benefit of this experiment?
Dr. Levitt's experiment of counting the chicks hatching in one season for a specific bird offers insight into the bird species' reproduction patterns, allows for hypothesis generation and testing, and contributes to broader scientific discussions, including natural selection.
Explanation:Dr. Levitt's descriptive experiment, in which she counts the number of chicks that hatch in one season for a specific bird species, has several major benefits. First, this type of experiment provides direct, observable data about the reproductive habits and success rate of the species, which can be crucial for evolutionary biology studies and conservation efforts. In essence, data collection at this level allows the biologist to record the behaviour of this bird species and compare it to that of other species.
Second, the experiment can form the basis for the generation and testing of hypotheses. For instance, if a high mortality rate is observed within the chicks before they reach sexual maturity, a hypothesis could be proposed and tested using methods such as mark and recapture and calculating later population densities.
Finally, the data collected can be used in subsequent research to refine the study of this species and possibly support broader claims, such as the role of response to information and communication in natural selection. In this way, the results from this experiment can significantly contribute to the vast and dynamic field of biology research.
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To which part of the DNA nucleotide do the letters A, T, C, and G refer?
A. The phosphate group
B. The nitrogen base
C. The deoxyribose
D. The amino acid group
PLESE HELP!!!!!!!!!!!!!!!!!!Based on this image, what is responsible for the pattern of ocean currents?
LINK----> file:///C:/Users/ATC_Student/Pictures/heyyyyyyyyyy.PNG
A. Earth's rotation
B. differences in water temputare
C. differences in water salinity
D. differences in water density
For the people who are confused about the picture situation here is the picture to the problem.
-Ps Bri yw <3
Blue jays and robins do not interbreed. Assuming the blue jays and robins share the same habitat, describe the possible conditions that keep these birds repoductivly isolated. Explain your answer.
Picture included please help this is for a very big grade and I really can figure these out serious inquiries only
The genetic code is said to be Universal because a codon represents the same ______ in almost all organisms.
Amino acid pattern
Genetic codeLiving cells need a set of instructions called the genetic code to transform information encoded in genetic material into proteins.A codon is a three-nucleotide DNA or RNA sequence that codes for a certain amino acid.The genetic code is said to be Universal because a codon represents the same Amino acid pattern in almost all organisms.For more information:
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What is the difference between NAD+ and NADH
What makes proteins