If present, the ________________ allele will always be expressed as the phenotype.

Biology

1 answer:

k0ka [10]4 years ago

6 0

Answer:

Dominant

Explanation:

The dominant allele will always be shown in the phenotype if it's present, because the other allele would be dominant or recessive. If both alleles are dominant, then the dominant one shows, if one of the alleles is recessive, then the dominant allele would show over the recessive one.

I think of recessive alleles as "weak" where, they just follow behind whichever other allele exists there. If the other one is dominant, then the recessive one is behind it, and no one can see it. If it other allele is recessive, a recessive allele will be in front.

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Suppose you have monohybrid flowers in your garden and find that they produce black seeds to brown seeds in the ratio of 3:1. If

Dvinal [7]

Hybrid = having one recessive and one dominant allele
This means that all of the flowers must have the genotype Bb.
Knowing this, let's make a Punnet Square.

$\begin{tabular}{ l c } & B \ \ \ \ b\\ B & \boxed{BB}\boxed{Bb} \\ b & \boxed{Bb\ }\boxed{\ bb} \\ \end{tabular}$

As you can see, 3 of these are going to have the dominant trait and 1 is going to have the recessive trait. This corresponds to our 3:1 in our question, meaning that the black seeds must be dominant and the brown ones recessive.

Because they are dominant, the genotype for black seeds could be BB <em /><em>or</em> Bb.

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4 years ago

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The code for a DNA strand is CGTA. What is the complementary strand?

Simora [160]

The DNA molecule is composed of two long complementary chains of nucleotides. The complementary DNA sequence of CGTA is GCAT.

The DNA molecule is composed of two antiparallel strands of nucleotides linked together by hydrogen bonds.

In DNA, there are four types of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytocine and Thymine).

In RNA, Thymine bases are replaced by Uracil bases.

According to the base pair rules, Adenine (A) always pairs with Thymine (T), whereas Cytosine (C) always pairs with Guanine (G).

In conclusion, the complementary DNA sequence of CGTA is GCAT.

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Which word best describes Closeness to the true value

Dmitry [639]

Answer:

Accuracy