Advertisements
Advertisements
प्रश्न
उत्तर
APPEARS IN
संबंधित प्रश्न
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
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.
Choose the correct answer:
A single recessive trait, able to express must be on _________
What is parthenogenesis?
Explain the mechanism of sex determination in birds.
What is Lyonisation?
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
Sex in honey bee is determined by ______.
In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic?
