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Explain sex determination in human beings.
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
In a human, how many chromosmes are present in an egg which has just been produced by the ovary?
The exchange of genetic material takes place in :
(a) vegetative reproduction
(b) asexual reproduction
(c) sexual reproduction
(d) budding
With the help of a chart, explain the method of sex determination in honeybees.
Distinguish between heterogametic and homogametic sex determination systems.
Brief about female heterogamety.
Identify the female heterogamety from the chromosomal complements given below.
There are five daughters and no son in a family. It is because
Which of the following decides the sex of the child?
