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Question 20:
The two versions of a trait (character) which are brought in by the male and female gametes are situated on

A
copies of the same chromosome

B
two different chromosomes

C
sex chromosomes

D
any chromosome

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Answer: An organism inherits two copies of each chromosome, one each from the male and female parents. The two forms of a gene controlling a character (two versions of a trait) are present at the same location on the two copies of one of the chromosomes. At the time of gamete formation, when a chromosome pair segregate and move to different gametes, two forms of a gene also segregate, each gamete receiving one copy of a chromosome along with one form of a gene. When these gametes from two parents fuse, the two copies of the same chromosome along with the two forms of a gene are also brought together in the organism of the next generation.

Hence, the correct answer is option (a).
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Question Text
Question 20:
The two versions of a trait (character) which are brought in by the male and female gametes are situated on
TopicHeredity and Evolution
SubjectScience
ClassClass 10
Answer TypeText solution:1
Upvotes31