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anygoal [31]
4 years ago
9

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

hat 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.
Biology
1 answer:
Ivenika [448]4 years ago
4 0

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

2

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

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What is expressed when both alleles for a gene are equally expressed as in human blood type
alexandr402 [8]

As both the genes get equally expressed in the human blood group genes, both the proteins or characters expressed by those genes get prominent in the phenotype of the organism.

<h3><u>Explanation:</u></h3>

In case of human blood type, there are co dominance between the genes coding for A blood group and B blood group. Absence of both of them produce the O blood group and presence of both of them produce the AB blood group.

The gene for A blood group codes for enzyme α-1,3-N-acetylgalactosamine transferase which attaches the N Acetylgalactosamine to surface of RBCs which are actually the A antigens.

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4 years ago
A family history of bipolar disorder increases one's risk for developing the disorder by a factor of:
iren [92.7K]

<span>A family history of bipolar disorder has ten-fold higher risk for developing the disorder by a genetic factor as compared to the general population. Bipolar disorder causes depression and elevated moods. Genetic influences are believe to account for 70 percent of the risk of developing the disorder showing strong hereditary component. In addition, many chromosomal regions and candidate genes are related to the susceptibility with each gene exert an effect.</span>

3 0
3 years ago
What controls most functions of a eukaryotic cell?
Svetlanka [38]
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3 years ago
Spermatogonia in the seminiferous tubules are located ________.
jekas [21]
Here is the answer:

Spermatogonia which is located in the seminiferous tubules are located <span> closest to the lumen of the tubule. Spermatogonia refers to spermatogenic cells and the sperm that are produced through spermatogenesis happen inside the seminiferous tubules which is located within the testes.</span>
8 0
3 years ago
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Korvikt [17]

Answer:

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3 years ago
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