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Serhud [2]
3 years ago
5

Human blood groups are governed by three alleles, IA, IB, and i. IA and IB are codominant and i is recessive to both. A man who

has type B blood and a woman who has type A blood could have children of which of the following phenotypes?
Biology
1 answer:
Ira Lisetskai [31]3 years ago
7 0

Answer:

They could have all four type phenotype that are A, B, AB, and O

Explanation:

If the man has A blood group and the woman has B blood group then the genotype of man can be IAIA or IAi and the genotype of woman can be IBIB or IBi.

               IA      i

       IB   IAIB   IBi

       i     IAi       ii

So if the genotype of the parents are IAi and IBi then out of four offspring one could have AB blood group, second could have B blood group, third could have A blood group and fourth could have O blood group as shown in the cross above.  

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Answer:

243

Explanation:

Let us assume the genotype of individual with five genes is AaBbCcDdEe

If we look at the simple mono-hybrid cross between two gene pairs let us say Aa and Aa, the following genotypes will be produced

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So total three different type of genotypes will be produced i.e AA, Aa, and aa

Like wise cross between Bb and Bb will produce BB, Bb, bb

Product of Cc and Cc will produce CC, Cc and cc

Product of Dd and Dd will produce DD, Dd, dd

Product of Ee and Ee will produce EE, Ee, ee

So in total there will be 5 such groups which will assort independently/

Thus, the probability will be

3 * 3* 3*3 *3\\= 3^5\\= 243

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3 years ago
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