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Lemur [1.5K]
3 years ago
13

Plz Help.

Biology
1 answer:
Lady bird [3.3K]3 years ago
5 0
White flowers: WW
Red flowers : ww

Homozygous plants have one type of allele, while heterozygous plants have 2 different alleles while the dominant one(uppercase) shows and the recessive one(lowercase) doesn't show, so since both of these plants are homozygous, both alleles are the same.

Ex: Homozygous: WW , ww (dominate one shows, recessive one shows)
Heterozygous: Ww ( only dominate shows)

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In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are expected from a cross between
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Answer:

Answer:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair          3/4

ss                  1/4          Long hair          1/4

Explanation:

Both are heterozygous for the trait so we can expect that the cross would be:

Ss x Ss

   S     s

S  SS   Ss

s   Ss   ss

So the resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair:  1/4

So in summary:

Genotype                  Phenotype                      

SS                 1/4          Short hair         3/4

Ss                 2/4         Short hair        

ss                  1/4          Long hair          1/4

Explanation:

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Hope this helps.
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4 years ago
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