Advertisements
Advertisements
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
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
APPEARS IN
संबंधित प्रश्न
Explain the mechanism of sex determination in birds.
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
Does the sex of the child depend on the father or it is just a matter of chance? Discuss.
What is parthenogenesis?
How many ovum are formed when a diploid cell undergoes meiosis, during oogenesis?
In XO type of sex determination ______.
The number of pairs of sex chromosomes in the zygote of a human being is ______
What is sex determination? Explain the mechanism of sex determination in the case of birds.
The sex chromosome in a human ovum is ______.
