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Home Q & A Board Biology-Related Homework Help General Biology
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sweetangel sweetangel
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12 years ago
Please help me with these homework questions.. Thanks

1. Consider a cross between a pea plant that is heterozygous for round seeds and a pea plant that has wrinkled seeds. The allele for round seeds (R) is dominant over that for wrinkled seeds (r). Using a Punnett square, determine the genotypes of the offspring.


2. In Guinea pigs, the brown coat (B) is a dominant over the cream-coloured coat (b), and straight hair (H) is dominant over curly hair (h). Using a Punnett square, complete the cross between a heterozygous brown, curly-haired individual and a cream-coloured, homozygous straight-haired individual. State the parents genotypes, gametes, and the F1 Phenotypes and genotypes.
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wrote...
#1
12 years ago
1.               
     R  r
r   Rr rr
r   Rr rr         
wrote...
#2
12 years ago
Quote from: Biljanoski (12 years ago)
1.               
     R  r
r   Rr rr
r   Rr rr         

So: 50% Rr
50% rr

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bulgariabulgaria
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#3
Posts: 11
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12 years ago
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sweetangel Author
wrote...
#4
12 years ago
Thanks Bulgaria. That's is so helpful. Slight Smile
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