Question

In: Biology

For each of the following crosses, what is the probability that a given child will have...

For each of the following crosses, what is the probability that a given child will have the exact same phenotype as either or both of the two parents? How many phenotypically different kinds of progeny could potentially result from each cross? How many genotypically different kinds of progeny could potentially result from each cross? You can assume capital letters represent dominant alleles and that the loci assort independently.

a) Aa Bb cc dd × aa bb Cc Dd

b) AA BB CC DD × aa bb cc dd

c) Aa Bb Cc Dd × Aa Bb Cc Dd

Expert Solution

a) Aa Bb cc dd × aa bb Cc Dd

	abCD	abcD	abCd	abcd
ABcd	AaBbCcDd	AaBbccDd	AaBbCcdd	AaBbccdd
Abcd	AabbCcdd	AabbccDd	AabbCcdd	Aabbccdd
aBcd	aaBbCcDd	aaBbccDd	aaBbCcdd	aaBbccdd
abcd	aabbCcDd	aabbccDd	aabbCcdd	aabbccdd

Parental type progeny = 2/16 = 1/8

phenotypically different kinds of progeny could potentially result from cross = phenotypically and genotypically all the progenies will be 16 different progenies.

b) AA BB CC DD × aa bb cc dd

c) Aa Bb Cc Dd × Aa Bb Cc Dd

	abcd
ABCD	AaBbCcDd

F1 = AaBbCcDd X AaBbCcDd

	ABCD	AbCD	ABcD	AbcD	Abcd	aBCD	abCD	aBcD	abcD	abcd
ABCD	AABBCCDD	AABbCCDD	AABBCcDD	AABbCcDD	AABbCcDd	AaBBCCDD	AaBbCCDD	AaBBCcDD	AaBbCcDD	AaBbCcDd
AbCD	AABbCCDD	AAbbCCDD	AABbCcDD	AAbbCcDD	AAbbCcDd	AaBbCCDD	AabbCCDD	AaBbCcDD	AabbCcDD	AabbCcDd
ABcD	AABBCcDD	AABbCcDD	AABBccDD	AABbccDD	AABbccDD	AaBBCcDD	AaBbCcDD	AaBBCcDD	AaBbccDD	AaBbccDD
AbcD	AABbCcDD	AAbbCcDD	AABbccDD	AAbbccDD	AAbbccDD	AABbCcDD	AabbccDD	AaBbccDD	AabbccDD	AabbccDd
Abcd	AABbCcDd	AAbbCcDd	AABbccDd	AABbccDd	AAbbccdd	AaBbCcDd	Aabbccdd	AaBbccDd	AabbccDd	Aabbccdd
aBCD	AaBBCCDD	AaBbCCDD	AaBBCcDD	AaBbCcDD	AaBBCcDd	aaBBCCDD	aaBbCCDD	aaBBCcDD	aaBbCcDD	aaBbCcDd
abCD	AaBbCCDD	AabbCCDD	AaBbCcDD	AabbCcDD	AabbCcDd	aaBbCCDD	aabbCCDD	aaBbCcDD	aabbCcDD	aabbCcDd
aBcD	AaBBCcDD	AaBbCcDD	AaBbccDD	AaBbccDD	AaBbccDd	aaBBCcDD	aaBbCcDD	aaBBccDD	aaBbccDD	aaBbccDd
abcd	AaBbCcDd	AaBbCcDd	AaBbccDd	AabbccDd	Aabbccdd	aaBbCcDd	aabbCcDd	aaBbccDd	aabbccDd	aabbccdd

B. Parental type progeny = 2/81

Phenotypically trhere will be 9 types of progenies.

and genotypically 18 types of progenies

C. . Parental type progeny = 4/81

Same as in part B.

gladiator answered 2 years ago

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For each of the following crosses, what is the probability that a given child will have...

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