GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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X-Linked recessive
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X-Linked Dominant
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Autosomal recessive
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Y Linked
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Detailed explanation-1: -This means that the trait is expressed in heterozygous condition in the daughters of first filial generation, thus the trait is dominant. Correct answer is B.
Detailed explanation-2: -X-linked recessive diseases most often occur in males. Males have only one X chromosome. A single recessive gene on that X chromosome will cause the disease.
Detailed explanation-3: -sex-linked recessive. Solution : If a genetic disease is transferred from a phenotypically normal but carrier female to only some of the male progeny, the disease is sex linked recessive disease.
Detailed explanation-4: -Answer: (a) If the father in a family has a disease while the mother is normal, the daughters only are inherited by this disease and not the sons.
Detailed explanation-5: -Codominant inheritance: In codominant inheritance, each parent contributes a different version of a particular gene, and both versions influence the resulting genetic trait.