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Tresset [83]
3 years ago
14

If this is on the gene in the DNA, how would the mRNA copy of it read? AATGCTCAG

Biology
2 answers:
mario62 [17]3 years ago
3 0

Answer:

The answer would be A.

Explanation:

In mRNA sequence, the base T will be replace by base U. So in this case, DNA sequence is AATGCTCAG, then mRNA sequence is AA<u>U</u>GC<u>U</u>CAG.

DaniilM [7]3 years ago
3 0

Answer:

b. UUACGAGUC

Explanation:

Adenine's opposite in mRNA is Uracil.

Guanine's opposite in mRNA is Cytosine.

Thymine's opposite in mRNA is Adenine.

Therefore, AATGCTCAG in mRNA is UUACAGUC.

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<h3>What is complete dominance?</h3>

When the dominant allele completely masks the expression recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait.

The dominant allele is hiding the expression of the recessive allele.

<h3>What are the lethal genes?</h3>

Refer to genes that impede the normal development of the individual.

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  • They can cause the individual's death after being born and <u>before reaching </u><u>sèxual maturity</u><u>.  </u>

Let us assume that mice color is coded by a single diallelic gene that expresses complete dominance.

<u>Available data</u>:

  • Yellow color is dominant over grey color.
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  • Grey is coded by the recessive allele y

  • Genotype YY → Yellow and lethal
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The cross would be as follows,

Cross:  Yy   x    Yy

Gametes) Y    y     Y    y

Punnett square)    Y      y

                      Y     YY    Yy

                      y      Yy     yy

F1) Considering ONLY the successfully born individuals

<u></u>

<u>Genotype</u>

2/3 = 50% of the progeny is expected to be heter0zyg0us, Yy.

1/3 = 25% of the progeny is expected to be h0m0zyg0us recessive, yy.

<u></u>

<u>Phenotype </u>

2/3 = 50% of the progeny is expected to be yellow, Yy.

1/3 = 25% of the progeny is expected to be grey, yy.

The phenotypic ratio is 2:1

You will learn more about lethal genes at

brainly.com/question/13654244

brainly.com/question/14932405

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