Life Sciences
GATE XL kind:question PYQs
Build your understanding with focused practice from past exam papers.
Questions 1191–1200 of 1235. Imported answers require independent review unless marked reviewed.
Question 81
Open questionXL-TMCQ1 markNeeds review
A female “Spotted sand piper” courts males repeatedly. This behavior can be explained by the term
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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 82
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Malaria is caused by Plasmodium species, which is a parasite having a complex life cycle. The fusion between male and female gametocytes of Plasmodium happens inside
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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 83
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Aromatase inhibitors are often prescribed for post-menopausal women to treat estrogen receptor positive breast cancer patients, because this class of drugs
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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 84
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The covalent modification performed by kinases which regulate proteins in signaling pathways is
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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 85
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Which one of the following statements is NOT correct?
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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
Open questionXL-TNAT2 marksNeeds review
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 87
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In the Meselson and Stahl experiment, E. coli was grown in a medium containing ¹⁵NH₄Cl. After 24 hours, E. coli were transferred to medium containing ¹⁴NH₄Cl. After the fourth generation in medium containing ¹⁴NH₄Cl, the ratio between hybrids (¹⁵N/¹⁴N) and light (¹⁴N/¹⁴N) labeled DNA will be 1: n, where the value of n is ____
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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 89
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A cell in G1 phase has 16 chromosomes. The total number of chromatids that would be found per cell during Metaphase II of meiosis are _____
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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 90
Open questionXL-TMCQ2 marksNeeds review
Upon activation of phospholipase C by ligand binding to G-protein coupled receptor, the Ca²⁺ concentration in cytosol will
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