QUESTION 14 In a cross between AaBb x AaBb, roughly 50% of the offspring show the recessive...

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Biology

QUESTION 14
In a cross between AaBb x AaBb, roughly 50% of the offspringshow the recessive phenotype and 50% show the dominantphenotype.Â Â This indicates that:
crossing over has occurred
dominance is incomplete
the two genes are on the same chromosome
homozygous recessive is lethal
QUESTION 15
A man with hemophilia marries a woman who is normal and not acarrier.Â Â Hemophilia is a recessive X-linkedallele.Â Â Which of the following is true?
None of the children will be carriers
All of the boys will have the disease
All of the girls will have the disease
All of the girls will be carriers
QUESTION 16
An organism with 72 chromosomes in the G₁ phase ofmeiosis will have how many chromosomes per gamete?
18
36
9
72
QUESTION 18
A farmer plants 1000 seeds of corn.Â Â The offspringwere 544 tall with yellow seeds, 188 tall with green seeds, 183short with yellow seeds and 64 short with greenseeds.Â Â What were the genotypes of the parents?
Ttyy x TtYy
TTYY x ttyy
TtYy x TtYy
TtYy x ttyy

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4.1 Ratings (494 Votes)

Ans14The two genes are on the same chromosome We can see that normally 16 combinations would have been possible out of which some new recombinants would also be produced but it is mentioned that 50 are recessive and 50 dominant meaning See Answer

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		crossing over has occurred
		dominance is incomplete
		the two genes are on the same chromosome
		homozygous recessive is lethal

		None of the children will be carriers
		All of the boys will have the disease
		All of the girls will have the disease
		All of the girls will be carriers