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प्रश्न
Define the following:
Sex-linked characters
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उत्तर
Sex-linked characters - Such characters or traits that are controlled by genes occurring on sex chromosomes are called sex linked characters.
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संबंधित प्रश्न
If X chromosome is inherited from mother and Y from father, the offspring will be male.
In a human, how many chromosmes are present in a brain cell?
Name any two genetic in humans.
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
What is parthenogenesis?
How is sex determined in human beings?
Identify the female heterogamety from the chromosomal complements given below.
Haplodiploidy is found in ______.
Which of the following statements is not true with respect to variation?
All human chromosomes ate not paired. Most human chromosomes have a maternal and a paternal copy, and we have 22 such pairs. But one pair called the sex chromosomes, is odd in not always being a perfect pair. Women have a perfect pair of sex chromosomes. But men have a mismatched pair in which one is normal sized while the other is a short one.
(a) In humans, how many chromosomes are present in a Zygote and in each gamete?
(b) A few reptiles rely entirely on environmental cues for sex determination. Comment.
(c) "The sex of a child is a matter of chance and none of the parents are considered to be responsible for it." Justify it through flow chart only.
OR
(c) Why do all the gametes formed in human females have an X chromosome?
