Having dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no dimples and whose mother did have dimples) marries a man whose mother had no dimples, whose father had no dimples, and whose grandparents on his father’s side did have dimples! a)What are the genotypes of the man and woman? b) Show the cross. c)How many different genotypes are possible among the offspring? d)How many different phenotypes are possible among the offspring? e)What is the probability of getting DD offspring? f) What is the probability of getting dd offspring? g) What is the probability of getting dimpled offspring? h) What is the probability of getting offspring with no dimples? i)What is the probability of getting homozygous offspring?
Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Having dimples (D) is dominant over not having dimples (d). A dimpled woman (whose father had no dimples and whose mother did have dimples) marries a man whose mother had no dimples, whose father had no dimples, and whose grandparents on his father’s side did have dimples!
a)What are the genotypes of the man and woman?
b) Show the cross.
c)How many different genotypes are possible among the offspring?
d)How many different
e)What is the probability of getting DD offspring?
f) What is the probability of getting dd offspring?
g) What is the probability of getting dimpled offspring?
h) What is the probability of getting offspring with no dimples?
i)What is the probability of getting homozygous offspring?
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