CELL DIVISION
MEIOSIS AND GENETIC VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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0
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1/4
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1/2
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3/4
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1
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Detailed explanation-1: -So, the correct option is ‘ one in two’.
Detailed explanation-2: -The probability of curly hair for the first child is 50 percent, since the straight gene is dominant and present on the X chromosome. The correct answer is option (D) One in two. Note: The curly hair and straight hair alleles are examples of codominant alleles for a phenotype.
Detailed explanation-3: -Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms, that means that if one parent gives you a curly-haired gene and the other parent gives you a straight-haired gene, you’ll be born with curly hair.
Detailed explanation-4: -of inheriting the gene for curly hair and a 50% chance of inheriting the gene for straight hair.
Detailed explanation-5: -Incomplete Dominance: Wavy hair is an intermediate phenotype between straight and curly hair. The presence of an intermediate phenotype means that it is an example of incomplete dominance.