What does the study of embryology tell us about evolution?

Answers

Answer 1

Answer:Embryology, the study of the development of the anatomy of an organism to its adult form, provides evidence for evolution as embryo formation in widely-divergent groups of organisms tends to be conserved. ... Another form of evidence of evolution is the convergence of form in organisms that share similar environments.

Explanation:it will help you with anatpony


Related Questions

Which of the following is not a step in the process of natural selection

A. Individuals who have favorable traits survive and reproduce more than those individuals lacking such traits.

B. Members of a population possess heritable variations.

C. People select which individuals breed and which ones do not.

D. Over multiple generations of reproducing, a larger proportion of the population will have those favorable traits and thus adaptation has occurred.

F. The population produces more offspring than the environment can support.

Answers

Answer:

A step that is not part of natural selection is people select which individuals breed and which ones do not.

Explanation:

Natural selection is a process in which favorable or unfavorable environmental conditions determine the evolution of species, producing differences in their genotype over a long period of time.

As its name indicates, it is a natural selection, in which no intervention by people is contemplated, so that people cannot determine which individuals breed.

Natural selection implies that the characteristics on which the environment influences are inheritable, that there is genetic variability in the population and that the variability of these characteristics implies the ease of reproduction and survival capacity.

The other options do form part of natural selection, since they are based on the three premises of this process:

Inheritable characteristics. Genetic variability. The variability of characteristics influences reproduction and survival.

Which factor does the moment magnitude scale estimate?

Answers

Answer:

Energy released

Explanation:

The moment magnitude scale estimates the total energy released by an earthquake.

Answer: The answer is Energy Released

Explanation: I Just did this Question.

Suppose that you began a one-year study of tuberculosis (TB) in St. Petersburg on January 1st, 2018. You enrolled 200 residents in your study and checked on their TB status on a monthly basis. At the start of your study on January 1st, you screened all 200 residents. Upon screening, you found that 10 of the healthy residents were immigrants who were vaccinated for TB and so were not at risk. Another 10 residents already had existing cases of TB on January 1st. On February 1st, two residents developed TB. On April 1st, three more residents developed TB. On July 1st, three of the residents who had existing TB on January 1st died from their disease. The study ended on December 31, 2018. Assume that once a person gets TB, they have it for the duration of the study, and assume that all remaining residents stayed healthy and were not lost to follow-up.

What was the prevalence of TB in the screened community on January 1st?

Answers

Answer:  5%

Explanation:

The Prevalence rate is the term used to describe the percentage of a population that have contacted the disease being tested for. It is usually done over a certain period or a certain time.

The prevalence of TB in the screened community on January 1st therefore is;

= Number of infected/ No. of Tested residents

= 10/200

= 5%

Where is energy stored in photosynthesis and cellular respiration?

Answers

Answer:

Chlorophyll is typically packed into stacks of membranes (called grana); it is in the grana where some of the sunlight is absorbed. Sunlight is converted to chemical energy in the form of ATP (adenosine triphosphate), which is the main energy-storing molecule in living organisms.

Explanation:

How could research on mice or rats help answer our medical research questions — questions that are, after all, about humans?

Answers

Answer:

you could disect them or observe what they do by doing things like putting them in a maze or seeing what they do in front of a mirror.

Explanation:

To which groups do most of the unknown species belong?

Answers

Answer:

insects and fungi

Explanation:

What factors should be taken into consideration when determining what raw materials to purchase? PLEASE HELP ME

Answers

Answer:

purity, value, composition, shelf life, potency, identity, and company appraisal.

If I have 12 neutrons and 11 protons what is the total atomic mass?

Answers

Answer:

23

Explanation:

Mass number is the total of the protons and neutrons together, and it is given the symbol A. Example: A sodium atom contains 11 protons and 12 neutrons; its mass number A is 23.

Answer:

23

Explanation:

atomic mass is the total of protons and neutrons therefore it's 23

An energy pyramid is shown below. Which portion of the diagram represents the level with the least available energy?

Answers

Answer:

Explanation:

The top predator. This is because, when energy goes higher on the pyramid, ten percent is taken in by each animal, so less energy is left for each animal.

The energy decreases everytime something higher in the food chain eats it so it would be the predator

Different energy sources provide different benefits to individuals and the environment. What are some nonpolluting sources of energy? a. coal, oil, and natural gas. c. alcohol and acetylene. b. nuclear energy. d. wind, solar, and hydroelectric power.

Answers

Answer:

Its D

Explanation:

Because they cause no harm to the environment and they are very safe to the environment.

Answer:

D

Explanation:

I took the test on edge

Which of the following bio molecule groups is described by the roles and functions listed above

Answers

Answer:

Explanation:

Some of the important functional groups in biological molecules are shown above: hydroxyl, methyl, carbonyl, carboxyl, amino, phosphate, and sulfhydryl (not shown). These groups play an important role in the formation of molecules like DNA, proteins, carbohydrates, and lipids.

How does the water on earth regulate the earth temperature

Answers

Answer:

It absorbs a lot of the sun’s energy.

Explanation:

A large portion of the sun’s energy and heat is absorbed by the oceans, which causes water to evaporate. Water has a high heat capacity, and therefore absorbs a large portion of the sun’s heat, regulating the earth’s temperature.

complete measure in 2/4​

Answers

One of half or it could 1/2 bc 2/4 is just half of 4

When you feel cold, there are sensors in your skin that tell the brain you need to warm up. The brain sends messages, by way of nerves, to the muscles in your body causing them to contract and relax very quickly resulting in a shiver. The movement of the muscles during a shiver generates heat which can be used to warm up the surrounding tissues. Which characteristic(s) of life is being represented during this action?
A) respond to stimuli
B) maintain homeostasis
C) growth and adaptation
D) respond to stimuli and maintain homeostasis

Answers

I think it is D because your responding to the cold from stimuli and by creating heat to keep your body the average temperature it is homeostasis.

In which phases is chromatin condensed?

Answers

Answer:

In stage 2

Explanation:

During interphase (1), chromatin is in its least condensed state and appears loosely distributed throughout the nucleus. Chromatin condensation begins during prophase (2) and chromosomes become visible. Chromosomes remain condensed throughout the various stages of mitosis (2-5).

Transcription takes places in the nucleus of the cell. what happens during transcription?

Answers

Answer:

Transcription takes place in the nucleus. It uses DNA as a template to make an RNA molecule. RNA then leaves the nucleus and goes to a ribosome in the cytoplasm, where translation occurs. 

Answer:

   the nucleus is giving the cell instructions on what to do.

Explanation:

I did it on edge

Which stroke or style is usually swum in a warm-up?

Answers

Answer:

The #1 stroke referred to in the warm-up is the stroke you're focusing on in the upcoming session, your main event this session. After sitting around for an hour or so waiting for your event, it's important to wake up the muscles and increase the blood flowing through your body again.

What happens at the Pacific Ring of Fire?

Answers

Answer:

THE PACIFIC RING OF FIRE Is an area around the pacific ocean with a lot of volcanic activity. magma is under the surface and lava is above the surface.

The Ring of Fire is home to 75% of the world's volcanoes and 90% of its earthquakes. This movement results in deep ocean trenches, volcanic eruptions, and earthquake epicenters along the boundaries where the plates meet, called fault lines.  

so in conclusion in the pacific area there is basically a lot of volcanic activity

hope it helps

its all i could think of : )

Explanation:

A biochemist extracts a molecule from a cell. This molecule catalyzes a chemical reaction. To what class of molecules does it belong?

A. Proteins
B. Carbohydrates
C. Lipids
D. Nucleic acids

Answers

Answer:

proteins create enzymes which speed up reaction

Enzymes are the molecules that catalyze biological reactions, while a catalyst is a material that aids in the occurrence of a chemical reaction, hence option A is correct.    

How do enzymes catalyze chemical reactions?

The crucial function of decreasing the activation energy of chemical events inside the cell is carried out by the majority of enzymes, which are proteins.

Enzymes are biological catalysts that significantly speed up reaction rates and have the propensity to be particular about particular reactants and products, a substrate is a term for the reactant in an enzyme-catalyzed process.    

Proteins are called enzymes to catalyze biological reactions that would not occur without them. For chemical reactions like digestion and cellular metabolism, these enzymes are necessary.

Therefore, since enzymes are a specific type of protein that catalyzes chemical events inside cells, they are excellent therapeutic targets, hence option A is correct.

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would all changes to a DNA sequence change protein structure and functions?

Answers

Answer:

A change in the gene's DNA sequence may lead to a change in the amino acid sequence of the protein. Even changing just one amino acid in a protein's sequence can affect the protein's overall structure and functions..

Explanation:

hope it helps..

Question 20 of 25

Einstein's theory of general relativity was published in 1916. It became fully

accepted by scientists in the 1960s and is currently the best explanation of

gravity. Why did it take so long to become an accepted scientific theory?

A. The scientific community requires a certain amount of time before

a theory can be accepted.

B. No scientific laws could be found to validate the theory.

C. More evidence needed to be gathered to validate the ideas in the

theory.

D. Einstein's theory was difficult for many people to understand.

SUBMIT

Answers

Answer:

D. Einstein's theory was difficult for many people to understand.

Explanation:

Einstein’s theory of general Relativity was largely Ignored for three decades because scientists at the time thought the theory was too complex compared to Newton's.

Therefore, it took long before the general science community accepted Einstein's theory of general relativity because Einstein's theory was difficult for many people to understand.

"D. Einstein's theory was difficult for many people to understand."

Each strand of a DNA molecule contains nitrogenous bases that pair with other nitrogenous bases in very specific ways. A segment of a DNA strand is shown.

3’ GATCGATC 5’

Which complementary DNA strand pairs correctly with the strand above?

A. 5’ CTAGCTAG 3’
B. 5’ GATCGATC 3’
C. 5’ CUAGCUAG 3’
D. 5’ CATCGATC 3’

Answers

A. 5’ CTAGCTAG 3’ because it’s asking for the complementary DNA not RNA

Each base pair forms a "rung of the DNA ladder" by joining two complementary DNA nucleotide bases. Two linked strands of DNA form a double helix, which is a structure that resembles a twisted ladder.

What is complementary base pairing in DNA molecule?

Because they are complementary base pairs, adenine binds to thymine while guanine attaches to cytosine. The complimentary bases may unite to form a bond.

This aids in holding the DNA molecule's two antiparallel strands together to form the helix. The complimentary base pairing rule refers to this.

Cytosine pairs with guanine, while adenine pairs with thymine. The two strands are so complimentary to one another.

For instance, a complementary DNA strand will have the nucleotide sequence 5' CTAGCTAG 3' for a DNA strand with the nucleotide sequence 3' GATCGATC 5'.

Therefore, According to this rule, nucleotides A and T and bases G and C are always equally abundant in DNA.

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Beta receptors:
O are cholinergic.
O bind acetylcholine.
O bind norepinephrine.
O bind the toxin muscarine.

Answers

Beta receptors bind norepinephrine.


(nutrient Cycles)

1. described what "carbon-based life"
means:

2. what causes carbon to return to the atmosphere in a very short time?

3. if one or more nutrients are missing in soil what could happen to the plants?

4. in salt water, blank causes algal blooms whereas in freshwater blank algal blooms.​

Answers

1. When we say life is carbon based, we mean that our skin, hat and cells are all made out of molecules that contain large amounts of carbons. Carbon atoms form the backbone of almost all the important biological molecules in our bodies ( except water ).

Consider the three different types of stem cells. Each one's ability to differentiate into new cells is slightly different. One type can differentiate into any cell, while another can only become specific cells. Select the answer that places the three types in the correct order, from widest range of differentiation to least able to differentiate (specific). (1 point)

A. totipotent, multipotent, pluripotent
B. pluripotent, totipotent, multipotent
C. totipotent, pluripotent, multipotent
D. pluripotent, multipotent, totipotent ​

Answers

Answer:

C

Explanation:

Totipotent can differentiate into any cell type-Pluripotent into less, and Multipotent being the most specialized.

The types of stems cells in the correct order, from widest range of differentiation to least able to differentiate will be C. totipotent, pluripotent, multipotent.

Totipotent simply means a single, immature cell that can give rise to a new organism. Pluripotent simply means substances that can be able to develop into different stem cells.

Lastly, the multipotent stem cells are the stem cells that can self-renew as they divide and then develop into multiple specialized cell types.

Therefore, the correct option is totipotent, pluripotent, and multipotent.

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To kill a fungus, you could use a fungi-_______

Answers

Answer:

antivirus

Explanation:

To kill a fungus, you could use a fungi-antivirus

Why do some dominant traits have two different types of alleles?

Answers

The DNA in each chromosome functions as a series of discrete genes that influence various traits. Thus, each gene also has a corresponding homologue, which may exist in different versions called alleles. The alleles at the same locus on the two homologous chromosomes may be identical or different.

Answer:

you inherit 2 alleles for each genes. one comes from your biological mom and the other comes from you biological father. if the alleles are identical like when both your parents have brown eyes and that it will cause you to have brown eye color. some alleles are dominant while the rest are recessive. the dominant trait is more stronger than recessive trait. It is a strictly relative effect between two alleles of a given gene of any function; one allele can be dominant over a second allele of the same gene, recessive to a third and co-dominant with a fourth. Additionally, one allele may be dominant for one trait but not others.

Explanation:

Lesson 5 Student Activity Sheets: How do bacteria grow?
PREDICTION:
1. If you could zoom in really close to see what was happening on a petri dish, what do you think you
would see?

Answers

Answer:I need some points,, I hope y’all can understand

Explanation:

The growth of bacteria can be observed as the bacteria grows very rapidly and fast by the process of asexual reproduction. They continuously multiplied and in very short period of time they divided from one to thousands.

What is asexual reproduction?

Asexual reproduction is defined as the process of reproduction in which only a single parent is involved. Reproduction has been defined as the process carried out by the living organisms and during the process of reproduction the living organisms produces their own young ones and feed them. Reproduction is the supreme quality of living things.

There are two types of reproduction and these are sexual and asexual reproduction. The process of reproduction in which two parents are involved is said to be sexual mode of reproduction and the process of reproduction in which only single parent is involved in known as asexual mode of reproduction. The example of asexual reproduction are budding, fragmentation, spore formation, and binary fission.

Therefore, The growth of bacteria can be observed as the bacteria grows very rapidly and fast by the process of asexual reproduction. They continuously multiplied and in very short period of time they divided from one to thousands.

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A red blood cell is placed in a salty solution. When it shrivets due to loss of water, we say it has

•become turgid

•plasmolyzed

•lysed

•crenated

Answers

Answer:

It's crenated ( I asked Google btw)

Become turgid.
This will be the answer according to me.

Photosynthesis/CR definition

Answers

Answer:

Photosynthesis is the process in which green plants and some other organisms transform light energy into chemical energy. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds.

Cellular Respiration is the process through which cells convert sugars into energy. To create ATP and other forms of energy to power cellular reactions, cells require fuel and an electron acceptor which drives the chemical process of turning energy into a useable form.

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