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'Generally, gametes produced by an organism will not be identical.' Which of the following does NOT influence this genetic variability of gamete formation? (A) Mutation (B) Sex linkage (C) Independent assortment of alleles (D) Crossing over in homologous chromosomes - HSC - SSCE Biology - Question 15 - 2004 - Paper 1
Question 15
'Generally, gametes produced by an organism will not be identical.' Which of the following does NOT influence this genetic variability of gamete formation? (A) Muta... show full transcript
Worked Solution & Example Answer:'Generally, gametes produced by an organism will not be identical.' Which of the following does NOT influence this genetic variability of gamete formation? (A) Mutation (B) Sex linkage (C) Independent assortment of alleles (D) Crossing over in homologous chromosomes - HSC - SSCE Biology - Question 15 - 2004 - Paper 1
Step 1
Which of the following does NOT influence this genetic variability of gamete formation?
Answer
To determine which option does NOT influence genetic variability in gamete formation, we need to analyze each choice:
(A) Mutation: Mutations introduce new genetic variations by altering DNA sequences. This contributes to genetic diversity in gametes.
(B) Sex linkage: Traits that are linked to sex chromosomes can influence gamete formation; however, this mainly pertains to the expression of traits, rather than variability of the gametes themselves.
(C) Independent assortment of alleles: This principle states that alleles for different genes assort independently of one another during gamete formation, leading to increased genetic diversity.
(D) Crossing over in homologous chromosomes: This process happens during meiosis and leads to recombination of genetic material, thus increasing variability in gametes.
From the above analysis, the choice that does NOT directly influence the genetic variability of gametes is (B) Sex linkage.