Match the type of genetic cross to the expected Mendelian ratios that would result. Genetics ...

Match the type of genetic cross to the expected Mendelian ratios that would result.

Genetics
- A. B. C. D. E.	The F₂ generation from a typical monohybrid cross of two true breeding parents, one dominant and the other recessive at a locus that exhibits complete dominance and 100% penetrance.
- A. B. C. D. E.	The F₂ generation from a typical dihybrid cross of two true breeding parents, one double dominant and the other double recessive at two unlinked loci that both exhibit complete dominance and 100% penetrance.
- A. B. C. D. E.	The F₁ generation from a typical monohybrid cross of two true breeding parents, one dominant and the other recessive at a locus that exhibits complete dominance and 80% penetrance of the dominant allele.
- A. B. C. D. E.	The F₂ generation from a typical dihybrid cross of two true breeding parents, one double dominant and the other double recessive at two linked loci that both exhibit complete dominance and 100% penetrance.
- A. B. C. D. E.	Results of a test cross on an F₁ individual from a typical dihybrid cross of two true breeding parents, one double dominant and the other double recessive at two unlinked loci that both exhibit complete dominance and 100% penetrance.

A.	3:1
B.	1:1:1:1
C.	11:1:1:3
D.	4:1
E.	9:3:3:1

Solutions

Expert Solution

1) The F2 generation from a typical monohybrid cross of two true breeding parents, one dominant and the other recessive at the locus that exhibits complete dominance and 100% penetrance - A)3:1

2) The F2 generation from a typical dihybrid cross of two true breeding parents one double dominant and the other double recessive at two unlinked loci that both exhibit complete dominance and 100% penetrance - E) 9:3:3:1

3) The F1 generation from a typical monohybrid cross of two true breeding parents, one dominant and the other recessive at a locus that exhibits complete dominance and 80% penetrance of the dominant allele - D) 4:1

4) The F2 generation from a typical dihybrid cross of two true breeding parents, one double dominant and the other double recessive at two linked loci that both exhibit complete dominance and 100% penetrance - C)11:1:1:3

This is because in case of linked loci the ratio of parental types are always greater than the recombinant.

5) Results of a test cross on an F1 individual from a typical dihybrid cross of two true breeding parents,one double dominant and the other double recessive at two unlinked loci that both exhibit complete dominance and 100% penetrance - B) 1:1:1:1

gladiator answered 1 year ago

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