Biology, 19.09.2019 06:01 moneyyfletcher

How to determine the phenotype for each genotype?

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The capital letter is your dominant allele and the lowercase letter is your recessive allele.

For complete dominance, if you have a homozygous dominant genotype (aka two capital letters) or a heterozygous genotype (aka one capital, one lowercase), the dominant phenotype will show.
On the other hand, if you have a homozygous recessive genotype (aka two lowercase letters), the recessive phenotype will show.

For your problems:
1) Yellow, Y, is dominant to blue, y. That means both YY and Yy genotypes will display the dominant phenotype, a yellow body.

If there was a yy genotype, then the recessive phenotype, a blue body, would show.

2) Square, S, is dominant to round, s. That means both the SS and Ss genotypes will display the dominant phenotype, a square shape.

If there was a ss genotype, then the recessive phenotype, a round body, would show.

Answer from: Quest

hey, i believe your answer would be d. sugar ribose and the base uracil. i believe this is the answer, because rna consists of sugar ribose, adenine, guanine, cytosine, and uracil.

your first option is incorrect, because that's dna. where it consists of sugar deoxyribose, adenine, guanine, cytosine and thymine.

your second option is also incorrect, this is because sugar deoxyribose is in dna, and uracil is in rna. these two do not make sense together.

your third option being incorrect, because sugar ribose is in rna, but not the base of thymine. rna consists of uracil, not thymine.

lastly your fourth option being correct! this answer is correct, because both sugar ribose, and the base uracil are in rna! ~

answer is d. sugar ribose and the base uracil.

Answer from: Quest

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