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1.blue eye colour in human is recessive to brown eye colour.the expected childern of a marrige between a blue eyed woman and a brown eyed man who had a blue eyed mother will be?a-all black eyed,b-one blue eyed and one brown eyed,c-all brown,d-none                                                            2-the existence within a population of non-beneficial alleles in heterozygous condition is?a-genetic load,b-genetic drift,c-genetic fliw,d-selection                                                                                      3-which of the four couple claiming the baby with o+ blood type are possibly the biological parents of it?a-AB- AND A+,A+ AND O-,O+ AND AB+                                                                                            

Asked by Priyanka 4th November 2017, 4:35 PM
Answered by Expert
Answer:

Dear pj0694sony@gmail.com

Thanks for asking us a question in Ask the Expert section of TopperLearning.com.

Please find the answer to your first question.

This question is based on Mendel’s monohybrid cross.

Blue eyes = bb

Brown eyes = Bb

Blue eyed mother = bb

Brown eyed father, with a blue eyed mother = Bb 

 

B

b

b

Bb

bb

b

Bb

bb

The parents have a 50% chance of having children with brown eyes and a 50% chance of having children with blue eyes.  So, the correct answer is option B.

In case of multiple questions within a query, please post each question individually and let us know where you are getting stuck so that we would be able to explain things better.

Regards

Topperlearning Team.

Answered by Expert 5th November 2017, 12:53 PM
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