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प्रश्न
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
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उत्तर
(i) The type of sex determination mechanism shown in female XX with male XO is male heterogamety.
Example- Humans
(ii) The type of sex determination mechanism shown in female ZW with male ZZ is female heterogamety.
Example- Birds
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संबंधित प्रश्न
What are the chromosomes XY and XX known as?
The human animal which has an XY pair of chromosomes is called :
(a) male
(b) hybrid
(c) female
(d) doomed
Choose the correct answer:
A single recessive trait, able to express must be on _________
Write the functional activity of the following structure:
Heterosomes
What is haplodiploidy?
What is Lyonisation?
Identify the female heterogamety from the chromosomal complements given below.
The maleness of a child is determined by ______
Select the incorrect statement
In the XX–XY sex determination system, which sex is considered heterogametic and produces two different types of gametes?
