OBJECTIVE LIFE SCIENCE
GENETICS
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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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0/16
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4/16
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8/16
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16/16
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Explanation:
Detailed explanation-1: -∙ Selfing of the F1 plants gave F2 progenies exhibiting 4 different phenotypes: Round yellow (9), wrinkled yellow (3), round green (3), and wrinkled green seeded plants (1). Hence, the phenotypic ratio is 9:3:3:1.
Detailed explanation-2: -Selfing of yellow round (YyRr) plants produce F2 generation with 9 yellow round (YYRR) : 3 yellow wrinkled : 3 green round : 1 green wrinkled plants. Thus, out of a population of 800 individuals in F$$ 2$$ generation number of yellow and wrinkled seeded plants is 3/16 x 800 = 150.
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