Question

what genotypes are produced in this cross? a male hamster has short hair and is all black is crossed with a long haired all white female hamster. i) black is dominant to white ii) long hair is dominant to short iii) the male is heterozygous for colour iv) the female is homozygous for long hair. options: bl, bl; bl, bl, bl, bl; bbll, bbll; bbll, bbll, bbll, bbll, bbll, bbll

Explanation:

Step1: Define genotype notation

Let \(B\) = black (dominant), \(b\) = white (recessive); \(L\) = long hair (dominant), \(l\) = short hair (recessive).

Step2: Determine male genotype

Male: short hair (\(ll\)), heterozygous black (\(Bb\)) → Genotype: \(Bbll\)
Gametes produced: \(Bl\), \(bl\)

Step3: Determine female genotype

Female: white (\(bb\)), homozygous long hair (\(LL\)) → Genotype: \(bbLL\)
Gametes produced: \(bL\)

Step4: Cross gametes to get offspring

Combine male and female gametes:

1. \(Bl \times bL = BbLl\)
2. \(bl \times bL = bbLl\)

Answer:

BbLl, bbLl