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Fantom [35]
4 years ago
12

Why did early investigators predict that there must be a reduction division in the sexual reproduction process?

Biology
1 answer:
Akimi4 [234]4 years ago
6 0
Chromosomes come in pairs (2n) in somatic cells or cells of the body. For instance, the number of chromosomes of a human being is 46 (23 pairs of chromosomes). In the event of sexual reproduction, gametes (sperm and egg cells) contain the same number of chromosomes as somatic cells then the union of the sperm and egg will produce twice that of normal (4n) chromosomes and will render reproduction inconsistent or even impossible. Therefore, a conclusion is made that in the cellular division of gametes, the chromosomes should be reduced in half in order to produce the same number of chromosomes for somatic cells generation by generation. 
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Explanation:

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Answer: DNA is a polymer of nucleotides, which consist of a sugar, a phosphate group, and a nitrogenous base

Explanation:

Every molecule in the human body are formed by the chains of particular substances. These components are arranged orderly as linked chains to give the structure called DNA.

The components include nucleotides—this is also considered the chemical substance in the human body which helps in the formation.

In this formation of chains, nitrogenous bases will also be linked to form a polymer of DNA.

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3 0
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<span>C. Because DNA contains phosphorus and proteins contain sulfur</span>
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