CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Cross Two Homozygous plants ( RRYY x rryy ) R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds What percent will have Round and Yellow seeds?
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0%
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25%
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50%
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100%
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Explanation:
Detailed explanation-1: -Answer: The correct option is (C). 50% will have round and yellow seeds in the F2 generation.
Detailed explanation-2: -The phenotypic ratio is 9:3:3:1 for round yellow: round green: wrinkled yellow: wrinkled green.
Detailed explanation-3: -Dihybrid cross is made between RRYY (yellow round seed) and yyrr (wrinkled green seed) of Pea.
Detailed explanation-4: -In case of homozygous alleles, only one gamete is formed from a single genotype.
Detailed explanation-5: -The dihybrid cross between RrYy and RRYY will give all the plants the phenotype of Round and yellow seed, i.e. all the plants will show the dominant trait, which is round shape and yellow color seed.
There is 1 question to complete.