PATHOLOGY MCQ
GENETICS AND DISEASE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Kara has several plants that produce either purple or whits flowers. She crosses a plant that has two recessive alleles for white flowers with a plant that has two dominant alleles for purple flowers. Which result would be true of the offspring? (hint make a punnett square)
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All of the offspring would have two recessive alleles and white flowers
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All of the offspring would have two dominant alleles and purple flowers
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All of the offspring would have one recessive allele, one dominant allele, and white flowers
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All of the offspring would have one recessive allele, one dominant allele, and purple flowers
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Explanation:
Detailed explanation-1: -APPLICATION By crossing (mating) two true-breeding varieties of an organism, scientists can study patterns of inheritance. In this example, Mendel crossed pea plants that varied in flower color. When pollen from a white flower fertilizes eggs of a purple flower, the first-generation hybrids all have purple flowers.
Detailed explanation-2: -Here, it has been given that purple flower color is dominant over the white flower color. Hence, the flower color of a plant that is heterozygous for this trait will be purple. Let P be the dominant allele and p be the recessive allele. i.e, 3/4 or 75% of the offsprings will have purple-colored flowers.
There is 1 question to complete.