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Question
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
Options
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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Solution
Females are homogametic and males are heterogametic
RELATED QUESTIONS
Answer the following questions related to sex determination in human beings:
i. What is sex chromosome?
ii. How many pairs of chromosomes are present in human beings?
iii. How is the sex of the human offspring determined?
iv. Draw a diagram depicting sex determination in man.
Write notes on sex determination in the unborn baby.
Both father and mother have the genes Ee in their cells. What colour are their eyes?
Name any two genetic in humans.
________ shows haplo-diploid type of sex-determination.
What is parthenogenesis?
Differentiate Intersexes from Supersexes.
A zygote which has an X-chromosome inherited from the father will develop into a
The two versions of a trait (character) which are brought in by the male and female gametes are situated on
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?
