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प्रश्न
Name any two genetic in humans.
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उत्तर
Colour-blindness, Thalassaemia, Sickle cell anaemia and Haemophilia
संबंधित 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
Explain the mechanism of 'sex determination' in birds. How does it differ from that of human beings?
A new born child has an XY pair of chromosmes. Will it be a baby boy or a baby girl?
In a human, how many chromosmes are present in a fertilised egg?
In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosomes is/are :
(i) large chromosome
(ii) small chromosome
(iii) Y chromosome
(iv) X chromosome
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.
Short Answer Question.
“Father is responsible for determination of sex of child and not the mother”. Justify.
There are five daughters and no son in a family. It is because
Grasshopper is an example of XO type of sex determination in which the males have ______.
