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please help 5. Purple snapdragons are crossed with white snapdragons. Purple col

ID: 214561 • Letter: P

Question

please help

5. Purple snapdragons are crossed with white snapdragons. Purple color shows compete dominance to white color. Find the genotypic and phenotypic ratios of the F2 offspring from a cross of homozy- gous parents 6. In watermelons, the allele for green rinds is completely dominant to the allele for striped rinds. You are given a melon with a green rind and asked to establish a pure-breeding line. How would you proceed? 7. A boy decided to raise rabbits. He found a variety he like, a mottled black and white. He bought a male and a female, and bred them. The litter consisted of 7 mottled rabbits and 1 white rabbit. a) On the basis of the data, what hypothesis would you make regarding the inheritance of the char- acteristic the boy desired? b) Were the rabbits homozygous or heterozygous?

Explanation / Answer

The genotype of purple snapdragons - PP

The genotype of white snapdragons - pp.

Cross between parent generation PP X pp

Gametes formed P p

F1 Generation Pp(purple snapdragons) X Pp

Gametes formed P and p Pa nd p.

F2 generation

The phenotypic ratio - 3(purple snapdragons) :1(white snapdragons).

The genotypic ratio - 1PP :2Pp :1pp.

Male /Female P p P PP(purple snapdragons) Pp(purple snapdragons) p Pp(purple snapdragons) pp(white snapdragons)