Life Sciences
GATE XL topic:genetics PYQs
Build your understanding with focused practice from past exam papers.
Questions 21–26 of 26. Imported answers require independent review unless marked reviewed.
Question 2
Open questionXL-TMCQ1 markNeeds review
A zoologist recovered some tissue from preserved skin of a woolly mammoth. Further genetic analysis requires DNA isolation and increase its amount. Which ONE of the following techniques would be most useful for increasing the amount of DNA?
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 20
Open questionXL-TNAT2 marksNeeds review
In a population which is in Hardy-Weinberg equilibrium, the frequency of occurrence of a disorder caused by recessive allele (q) is 1 in 100. The frequency of heterozygotes in the population will be ____________. (Give the answer to three decimal places).
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 78
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A woman with blood group A gave birth to a baby with blood group AB. The blood group of the father would be
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 86
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A particular species is found to have 2n=16 chromosomes. The number of linkage groups in this species will be ______
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 88
Open questionXL-TNAT2 marksNeeds review
The population data present in an island is as follows:
Genotype | Number
AA | 300
Aa | 500
aa | 200
Total | 1000
The allele frequency of A (upto two decimals) will be _____
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 94
Open questionXL-TNAT2 marksNeeds review
In a population which is in Hardy-Weinberg equilibrium, the frequency of the recessive genotype of a certain trait is 0.09. The percentage of individuals with heterozygous genotype is __ %
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