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nekit [7.7K]
3 years ago
12

Which of the following cannot exist in RNA?

Biology
2 answers:
gladu [14]3 years ago
4 0
Your answer would be A. Uracil
patriot [66]3 years ago
3 0
The answer is b.thymine
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Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). A plant of unknown gen
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Answer:

<h2>RrYy and rryy </h2>

Explanation:

1. As given; Round seeds (R)  are dominant on wrinkled seeds (r),

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In a testcross, between an unknown genotype and a homozygous recessive with wrinkled and green seeds (rryy).

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round and green are  49;  genotype (R_yy)  

wrinkle and yellow are 44;  genotype (rrY_)

wrinkled and green are  51 ; genotype  (rryy)

Here, the genotype of parents of these offspring would be RrYy and rryy.

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