HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Axial flowers are dominant over terminal flowers. What is the phenotypic ratio for the following cross?Aa X aa
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4:0
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3:1
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2:2
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1:3
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Explanation:
Detailed explanation-1: -The genotype of F1 generation plants is Aa. ii iii From the above cross 3 plants with axial flowers Aa and 1 plant with terminal flower aa is produced. So phenotypic ratio is 3 : 1.
Detailed explanation-2: -When Aa is crossed with Aa then the gametes A, a, A and a generate new offsprings as AA, Aa, Aa, and aa, therefore 3 axial flowers and 1 terminal flower will be generated.
Detailed explanation-3: -In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).
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