Explain the evolutionary relationship between the fin of a fish and the flipper of a whale.

Biology

2 answers:

Luda [366]3 years ago

6 0

Answer:

The presence of fins in both species represents an adaptation to the same environment (i.e., sea), but in no way does this adaptation means close evolutionary homology between fishes and mammal cetaceans (whales)

lozanna [386]3 years ago

6 0

Answer:

Homologous structures

Explanation:

Homologous structures are parts of the skeleton of organisms are similar in structure. This gives the impression that their is a common ancestor. Mostly the structures are not similar and the function may or may not be the same in appearance per-say such as fish fins and whale flippers. The important part of homologous structures is that they have a skeletal similarity.

This, and the emergence of other structures is the product of evolution so each organism can have the best chance of adaptation to their environment. This ensures the survival of a species and the continuation of the next generation.

You might be interested in

Which of the purely endocrine organs contain modified neurons that produce and secrete neurohormones?

irga5000 [103]

Answer:

D. Only the adrenal medullae

Explanation:

The adrenal medulla is the inner region of the adrenal gland. It consists of the modified sympathetic ganglion of the autonomic nervous system and develops from the same embryonic tissue as all other sympathetic ganglia. The cells of the adrenal medulla lack axons and are [present in the form of clusters around large blood vessels.

The chromaffin cells of adrenal medulla serve the endocrine function. These cells are innervated by sympathetic preganglionic neurons of the ANS. The adrenal medulla secretes epinephrine and norepinephrine which are called neurohormone as being secreted by neurons.

4 0

3 years ago

Which characteristics must an object possess in order to be considered alive?

worty [1.4K]

<span>An object to be considered alive must have these characteristics.

1. Acquire and uses energy.
2. contains genetic programme.
3. composed of one more cells.
4. Respiration.
5. Must be able to grow.
6. Must be able to reproduce.
7. Must have a metabolism.
8. Must be able to respond to its environment. 9. Must be made of cells.</span>

7 0

4 years ago

Give a scenario where a cell may need to perform a form of endocytosis and exocytosis

Firdavs [7]

<span>A scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules.
A scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell. The movement of macromolecules of polysaccharides or proteins out of or into the cell is known as Bulk transport.
Bulk transport is of two types which include endocytosis and exocytosis whereby both require an expenditure of energy. Exocytosis materials are being exported out of the cell via secretory vesicles.
Golgi complex they do package macromolecules into transport vesicles which travel to and spill its content out of cells. Exocytosis is very much important in the expulsion of waste materials out of the cell and also in products secretion. Endocytosis is the process where materials move into the cell.
Endocytosis is divided into the three types which include pinocytosis, phagocytosis, and receptor-mediated endocytosis.</span>

6 0

3 years ago

Read 2 more answers

Describe Okasaki fragments.

snow_lady [41]

Answer:

Okazaki fragments are short sequences of DNA nucleotides which are synthesized discontinuously and later linked together by the enzyme DNA ligase to create the lagging strand during DNA replication.

Explanation:

7 0

3 years ago

What were some of the pollutants named in the article and what are they used for?

Alex

I don't see your article, but one pollutant, CFC, is used in refrigerators and aerosols. Please mark Brainliest!!!

5 0

3 years ago