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प्रश्न
ZW-ZZ system of sex determination occurs in
विकल्प
Fishes
Reptiles
Birds
All of these
उत्तर
All of these
संबंधित प्रश्न
Explain sex determination in human beings.
Differentiate between male and female heterogamety
Which of the following is an example of ZW – ZZ type of mechanism of sex determination?
In a human, how many chromosmes are present in a brain cell?
Does genetic combination of mother play a significant role in determining the sex of a new born baby?
A zygote which has inherited an X chromosome from the father will develop into :
(a) baby boy
(b) baby girl
(c) adult
(d) either boy or girl
Both father and mother have the genes Ee in their cells. What colour are their eyes?
A couple with a newborn baby is troubled that the child does not resemble either of them. Suspecting that a mixup occurred at the hospital, they check the blood type of the infant. It is type O. Because the father is type A and the mother type B, they conclude that a mixup has definitely occurred. Are they correct? Give reason for your answer.
With the help of a chart, explain the method of sex determination in honeybees.
Give Reason:
Why X-linked recessive diseases are more common among males than females.
Give Technical Term:
The cell which determines the sex of a baby.
How drones are produced in honey bees?
Which of the following is incorrect regarding ZW-ZZ type of sex determination?
Differentiate Intersexes from Supersexes.
Sex is determined in human beings ______.
The number of pair (s) of sex chromosomes in the zygote of humans is
Sex in honey bee is determined by ______.
The chromosomal constitution of a human female can be written as ______
Does a male child inherit X chromosome from his father? Justify.
Sex of an individual is determined by different factors in various species. Some animals rely entirely on the environmental ones, while in some other animals the individuals can change their sex during their life time indicating that sex of some species is not genetically determined. However in human beings, the sex of an individual is largely determined genetically.
- In what way are the sex chromosomes 'X' and 'Y' different in size? Name the mismatched pair of sex chromosome in humans.
- Write the number of pair/pairs of sex chromosomes present in human beings. In which one of the parent (male/female) perfect pair/pairs of sex chromosome are present?
- Citing two examples, justify the statement "Sex of an individual is not always determined genetically".
OR
Draw a flow chart to show that sex is determined genetically in human beings.
