Question

Has there been an interchange of babies? Support your | بهانم unea pigs rough hair (R) lis dominant with respect to smooth hair (d), and black hair (B) is dominant with pect to white (b). These genes are not linked (.e., the locus for hair color is not on the same chromosome as the focus for hair texture), nor are they sex-linked. Cross a guinea pig heterozygous for haic texture and color, with & white-smooth-haired guinea pig. Describe the predicted F1 in terms of phenotype and genotype frequencies. ver several years, a pair of quinea pigs produced the following offspring: 25% Rough-black Box 25% Rough-White A 25% Smooth-black p at 25% Smooth-White >Describe the phenotypes and genotypes of each parent. bo o nr dominant over no spots.

Answer 1

QUESTION 15: In this question, two traits are given which are not linked nor they are sex- linked. The two mention traits are hair texture and hair color .

GIVEN R- Rough hair - Smooth hair B- Black hair b- white hair ALSO R is dominant over r & Bis dominant over b. A/S, Heterozygous for bair texture and color 00- ROBb & white - Smooth-haired quin - robb Since both white & Smooth hour are recessive traut CROSS X - Ro Bb LPI) F1 generation : robb (P2) (Parents) I I I - RB ob Rabb ob Robb ob Rp Bb ob Por Bb Rb Robb Robb 1 Robb Robb zB robb 77 Bb Bb Bb ob robb robb gy bb robb R&Bb - Robb - og Bb - robb Rough - black haired Rough white haired Smooth - black haired Smooth - white haired

for second question, genotype of each parent - RrBb and rrbb

FL generation genotype phenotype 1:1:1:1 1:1:1:1 Now, pigs over several years, a pair of produced at % R-B 25%. - 25% J-B, 25% guinea Rob rob R-B : 8-B : Rob : 8-6 same above we can say that one of the parent was heterozygous for hair texture & color and other was white - smooth haired

And phenotype of each parent - rough-black hair and smooth- white hair