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प्रश्न
The two versions of a trait (character) which are brought in by the male and female gametes are situated on
विकल्प
copies of the same chromosome
two different chromosomes
sex chromosomes
any chromosome
उत्तर
copies of the same chromosome
Explanation -
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.
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संबंधित प्रश्न
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
A normal cell of human body contains 23 pairs of chromosomes. The number of chromosomes in a sex cell (sperm or ovum) of a human being is most likely to be :
(a) 46
(b) 23
(c) 21
(d) 42
What is haplodiploidy?
Which of the following organisms has haploid number of chromosomes?
If a normal cell of the human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be ______
Which of the following statements is not true with respect to variation?
A trait in an organism is influenced by
Sex in honey bee is determined by ______.
How is the sex of a newborn individual determined in different species of animals? Give three examples to support your answer.
A zygote which has Y chromosome inherited from the father will develop into a ______.