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प्रश्न
What is male heterogamety?
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उत्तर
Male heterogamety (XY males) is a type of sex determination in which males produce two different types of gametes. For example, human males produce two kinds of sperms that is sperm with X- chromosome and sperms with Y- chromosome.
संबंधित प्रश्न
Explain sex determination in human beings.
Differentiate between ‘ZZ’ and ‘XY’ type of sex-determination mechanisms.
"The sex of a newborn child is a matter of chance and none of the parents may be considered responsible for it". Draw a flow chart showing determination of sex of a newborn to justify this statement.
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
Complete the following sentence with appropriate word:
___________ chromosomes do not take part in sex determination.
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
Diploid larvae which get royal jelly as food develops into ____________ and other develops into workers (sterile females).
Which of the following group shows ZW-ZZ type of sex determination?
In the haplodiploidy system observed in honeybees, unfertilized eggs develop into which type of individual?
In a bird population using the ZW–ZZ sex determination system, if a ZZ male mates with a ZW female, what proportion of offspring would be expected to be female?
