multiple answers correct question

Asked by minipkda | 1st Jun, 2018, 05:45: PM
Linked genes usually do not assort independently but remain together in the gametes and the offspring give a dihybrid ratio of 3:1 instead of the normal ratio of 9:3:3:1. In our cross, if the ratio obtained is 3:1, it implies that the 75% of the cattle were black and 25% was white. Out of the 75% cattle which was black, 25% died after birth since the cattle that died was black in colour. This shows that 50% of the cattle that survived was black and the rest 25% was white.
Basis these assumptions, the probable genotype of the parent cattle which satisfies the above cross requirement is-
Indian breed – BBDDZz
Australian breed- bbDDZz,
where B and D are linked genes.
So, the correct answer is option C.
Linked genes usually do not assort independently but remain together in the gametes and the offspring give a dihybrid ratio of 3:1 instead of the normal ratio of 9:3:3:1. In our cross, if the ratio obtained is 3:1, it implies that the 75% of the cattle were black and 25% was white. Out of the 75% cattle which was black, 25% died after birth since the cattle that died was black in colour. This shows that 50% of the cattle that survived was black and the rest 25% was white.
Basis these assumptions, the probable genotype of the parent cattle which satisfies the above cross requirement is-
Indian breed – BBDDZz
Australian breed- bbDDZz,
where B and D are linked genes.
So, the correct answer is option C.
Answered by Sheetal Kolte | 4th Jun, 2018, 06:51: PM
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