Advertisements
Advertisements
प्रश्न
The number of pair(s) of sex chromosomes in the zygote of humans is :
(a) one
(b) two
(c) three
(d) four
उत्तर
The number of sex chromosomes in the zygote of humans is two-- XX in females and XY in males.
APPEARS IN
संबंधित प्रश्न
"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.
Does genetic combination of mother play a significant role in determining the sex of a new born baby?
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
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.
Answer the following question:
How is sex determined in human beings? Explain with the help of a diagram.
Identify the female heterogamety from the chromosomal complements given below.
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
Fill the blank circles in figure and identify the sex of child A and B. 
