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# What is the probability of obtaining a blue parakeet when two green heterozygous parakeets...

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7 years ago
 What is the probability of obtaining a blue parakeet when two green heterozygous parakeets... Question one:Feather colour in pararkeets is controlled by two genes. For one pigment gene, the B allel produces blue colour and the b allele does not produce any colour. For the other pigment gene, the Y allel produces yellow colour and the y allele does not produce any colour. Any genotype containing at least one B allele and one Y allele will produce a green parakeet.Which of the following parental genotypes could produce offspring with the four colour patterns?A. bbYY x bbyyB. BbYY x BbyyC. BBYy x BbYyD. Bbyy x bbYyHINT: Use a punnett square to demonstrate your answer is correct. Do you need punnett squares of size 4 rows X 4 columns?(I'm thinking that the answer is B, but I don't know if I did the work right).Question two:(Almost like the last question) But now it asks:What is the probability of obtaining a blue parakeet when two green heterozygous parakeets are crossed?A. 0B. 9/16C. 3/16D. 1/4If anyone could help me understand it would be much appriciated!!! Read 4162 times 26 Replies

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wrote...
Educator
7 years ago
 Hope the attachment helps... Attached file Thumbnail(s): You must login or register to gain access to this attachment.
wrote...
7 years ago
 Thank you!! But im also hoping for an explination too so when I go into the exam and come across a question like this one ill know how to do it
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Educator
7 years ago
 Hey peaches+cream, it's easy to do, but just very time consuming, because you will have to create four dihybrid crosses, like: Attached file Thumbnail(s): You must login or register to gain access to this attachment.
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2 years ago
 thank you
wrote...
2 years ago
 Thank you.
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2 years ago
 thank you!
wrote...
2 years ago
 THANk you
wrote...
2 years ago
 thank u
wrote...
2 years ago
 than you
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2 years ago
 thank you
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A year ago
 thank you
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A year ago
 thank you
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A year ago
 thank you
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