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Vladimir79 [104]
4 years ago
11

How does the skin regulate body temperature?

Biology
1 answer:
seraphim [82]4 years ago
8 0
The skin regulates body temperature by perspiration or by using the arrector mucle that holds the hairs on skin. During a hot day, the skin perspires....it gives out water along with sebum and other salts and substances which cools the body. The arrector muscles loosen the hair due to which the hairs are not erect. During a cold day, the arrector muscles forcibly erect the small hairs on the skin which trap the heat of our body and provide insulation. In this way, it regulates temperature.
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Two true-breeding stocks of pea plants are crossed. One parent has red, axial flowers and the other has white, terminal flowers;
NARA [144]

Answer:

3/16

Explanation:

Two true-breeding stocks of pea plants are crossed. One parent has red RR, axial flowers AA and the other has white rr, terminal flowers aa

Parent cross RRAA x rraa

Gamete: RA x ra

F1 gen. RrAa

Selfing of F1. RrAa x RrAa

F2 offspring

Rr x Rr Aa x Aa

RR Rr rr AA Aa aa

3/4 red 1/4 white 3/4 axial 1/4terminal

Probability of plants with white axial flowers is 1/4*3/4 = 3/16

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During interphase, the cytoplasm doubles, increasing the overall size and volume of the cell. Moreover, also during interphase, chromosomes are duplicated in preparation for cell division.

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During mitosis, the duplicated chromosomes separate and then they are distributed to two offspring cell nuclei.

During cytokinesis, the cell divides into two offspring (daughter) cells, each with a complete set of chromosomes from the parent cell.

Learn more about the cell cycle here:

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