HEREDITY
MONOHYBRID CROSS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1:4 CC 2:4 Cc 1:4 cc3:4 cleft chin 1:4 no cleft chin
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2:4 Cc 2:4 cc2:4 cleft chin 2:4 no cleft chin
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2:4 Cc 2:4 cc2:4 cleft chin 2:4 no cleft chin
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2:4 CC 2:4 Cc4:4 cleft chin
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Detailed explanation-1: -In the example of the cleft chin, where B is cleft chin (dominant allele), wherever a pair contains the dominant allele, B, you can expect a cleft chin phenotype.
Detailed explanation-2: -what is the genotype of a heterozygous person with a cleft chin? with a cleft chin is AA.
Detailed explanation-3: -If both parents are homozygous dominant, or one parent is homozygous while the other is heterozygous or even homozygous recessive, there will be a 100% probability that the offspring will have a cleft chin. If both parents are heterozygous, there is a 75% probability that an offspring will have a cleft chin.
Detailed explanation-4: -Cleft chins were believed to be a dominant trait: if two parents had cleft chins, their kids could have a cleft or might not. And if two parents had smooth chins, their kids would always have smooth chins. It’s still more likely than not that if your parents both have cleft chins, you’ll have one.