NEET Botany Sex Determination MCQ Question
Which of the following statements about sex determination and mutations is correct?
In humans, the presence of XY chromosomes determines male sex, while mutations can lead to changes in phenotype.
Males in birds possess Z and W chromosomes, similar to humans where an X and Y chromosome determine male sex.
Mutations only cause changes in the genotype and do not affect the phenotype of an organism.
Females in humans have XY chromosomes, while males have XX chromosomes, leading to a different mechanism of sex determination.
Correct Answer
Detailed Explanation
In humans, the XY chromosome pair determines male sex, while mutations can alter the genotype and phenotype, as described in the NCERT context. Option B incorrectly states the chromosomal makeup in birds, while C and D contain factual inaccuracies about mutations and sex chromosomes in humans.
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