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lawyer [7]
3 years ago
12

n a classic example of this type of trait: the arms of a human, the legs of a cat, the flippers of a whale, and the wings of a b

at, all have similar structures as seen in the picture above. Each of the structures serves a unique purpose for the different organisms and their lifestyles. However the similarity between the structures implies that they were derived from a common ancestor. What kind of trait is being described in this example
Biology
1 answer:
Novay_Z [31]3 years ago
3 0

Answer:

Scientists must collect accurate information that allows them to make evolutionary connections among organisms. Similar to detective work, scientists must use evidence to uncover the facts. In the case of phylogeny, evolutionary investigations focus on two types of evidence: morphologic (form and function) and genetic. In general, organisms that share similar physical features and genomes tend to be more closely related than those that do not. Such features that overlap both morphologically (in form) and genetically are referred to as homologous structures; they stem from developmental similarities that are based on evolution. For example, the bones in the wings of bats and birds have homologous structures (Figure 1).

Figure 1. Bat and bird wings are homologous structures, indicating that bats and birds share a common evolutionary past. (credit a: modification of work by Steve Hillebrand, USFWS; credit b: modification of work by U.S. DOI BLM)

Notice it is not simply a single bone, but rather a grouping of several bones arranged in a similar way. The more complex the feature, the more likely any kind of overlap is due to a common evolutionary past. Imagine two people from different countries both inventing a car with all the same parts and in exactly the same arrangement without any previous or shared knowledge. That outcome would be highly improbable. However, if two people both invented a hammer, we can reasonably conclude that both could have the original idea without the help of the other. The same relationship between complexity and shared evolutionary history is true for homologous structures in organisms.

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A plant with purple flowers is allowed to self-pollinate. Generation after generation, it produces purple flowers. This is an ex
algol [13]

a. hybridization

b. incomplete dominance

c. true-breeding

d. the law of segregation

e. polygenetics

Answer:

c. true-breeding

Explanation:

True-breeding is a type of breeding which involves a cross between two parents that are homozygous for a trait leading to the production of offspring from generation to generation that have genotypes that express the same phenotypic traits. The parent plants with purple flowers in the question, are both homozygous for flower color.

4 0
4 years ago
In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide fro
neonofarm [45]

The correct option is (C) Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide from the tissues to the lungs where, Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

<h3>How does hemoglobin contribute to the movement of carbon dioxide from the tissues to the lungs?</h3>
  • The transport of carbon dioxide in the blood is influenced by a number of factors. First, blood contains more carbon dioxide soluble molecules than oxygen. The plasma contains 5–7% of the total dissolved carbon dioxide.
  • Second, carbon dioxide can enter red blood cells and bind to hemoglobin or it can bind to plasma proteins. In this form, 10% of the carbon dioxide gets transported.
  • A substance known as carbaminohemoglobin is created when carbon dioxide binds to hemoglobin. Hemoglobin and carbon dioxide can bind to one other again.
  • As a result, when it gets to the lungs, the carbon dioxide can separate from the hemoglobin without restriction and leave the body.
  • Third, the bicarbonate buffer system is responsible for transporting 85% of the carbon dioxide molecules.

Learn more about the CO₂ transfer with the help of the given link:

brainly.com/question/9131881

#SPJ4

I understand that the question you are looking for is "In addition to transporting oxygen from the lungs to the tissues, hemoglobin is also involved in transporting carbon dioxide from the tissues to the lungs. How is this accomplished?

A. Carbon dioxide competes for the oxygen-binding site on the heme.

B. Carbon dioxide competes for the 2,3-BPG-binding site.

C. Carbon dioxide reacts with an amino group to stabilize the deoxyhemoglobin state.

D. Carbon dioxide binds to the carboxyl terminus of hemoglobin."

5 0
1 year ago
---------structures are those structures that have a reduced or no apparent function in an existing organism but served a purpos
Sergeu [11.5K]
The answer is Vestigial
5 0
3 years ago
Read 2 more answers
Ms. Hendren has decided that she would like to grow some tomatoes and wants to know how much light will cause the plant to grow
yan [13]

Answer:

The correct answer is -

Independent variable - the amount (time period) of light given to pots.

Dependent variable - size of tomatoes

Control variable - dark or absence of light

Control group - pot placed in the darkroom.

Explanation:

The independent variable is the variable that is changed or manipulated in particular research or study to see the effect of that variable on dependent variable. In this case, the amount of light each pot gets is the independent variable.

The dependent variable is the variable that depends on the change in the independent variable. The size of tomatoes is the dependent variable here.

The control variable is the variable that remains in standard condition or condition which can be used to compare with the effect of the independent variable. The absence of light on one of the tomato pot is the control variable.

The control group is the group of subjects did not get any treatment that experiment group receives. The pot which is placed in the dark room is control group here.

5 0
3 years ago
the tiny things that materials are made from and a quality of a substance that describes how it appears or behaves
Alchen [17]
Atoms is the first one i think.
5 0
3 years ago
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