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प्रश्न
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
पर्याय
It occurs in birds and some reptiles
Females are homogametic and males are heterogametic
Male produce two types of gametes
It occurs in gypsy moth
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उत्तर
Females are homogametic and males are heterogametic
संबंधित प्रश्न
In a human, how many chromosmes are present in an egg which has just been produced by the ovary?
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
Define the following:
Sex-linked characters
Explain the mechanism of sex determination in humans with a suitable chart.
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following develops through parthenogene is?
In XO type of sex determination ______.
Which of the following group shows ZW-ZZ type of sex determination?
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?
The sex chromosome in a human ovum is ______.
