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scoundrel [369]
2 years ago
5

What is the defining criterion for determining a human male?

Biology
1 answer:
Pepsi [2]2 years ago
8 0

Answer:

A Y-chromosome

Explanation:

Males have one X and one Y chromosome

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Early geneticists wondered how only four nucleotides can specify the sequence of 20 amino acids in proteins. They hypothesized t
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Answer:

Early geneticists wondered how only four nucleotides can specify the sequence of 20 amino acids in proteins. They hypothesized that there must be a code that linked the nucleotide sequence in a gene to the amino acid sequence in a protein. Each nucleotide code is called a codon. Today we know that there is a genetic code in which __________nucleotide(s) code(s) for each amino acid.

3

4

1

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Explanation:

3 is the answer. 43 or 64 is the number of possible 3-letter codes that can be formed.

more than one codon can codes for the same amino acid

4 0
3 years ago
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Answer:

A.) NO₃⁻

Explanation:

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