Jamb 1990 Biology Questions
Question 31:
In organism where the 2nd number of chromosomes is 16, the number of chromosomes in each gamete will be
View Answer & ExplanationQuestion 32:
What will be the result of the first filial generation (F1) and the second filial generation (F2) of a mono-hybrid cross between pure line normal-winged Drosophilia flies and pure line short-winged flies, if the gene for the normal wing is dominant?
- A F1 flies all short-winged and F2 flies all normal-winged
- B F1 flies all normal and F2 flies all short-winged
- C F1 flies all short-winged and three-quarters of F2 flies are short-winged
- D F1 flies all normal-winged and three-quarters of F2 flies are normal-winged
Question 33:
What stage during cell division is represented in the figure above?
- A Prophase
- B Metaphase
- C Anaphase
- D Telophase
Question 34:
An individual in the AB blood group is a universal recipient for blood donation because
- A All the red blood cells do not carry antigen
- B All the red blood cells carry antigen
- C All the red blood cells carry antigen
- D There are no anti-A and anti-B antibodies in the serum
Question 35:
Haemophilia results from the mutation of the genes
- A In the sex chromosome
- B Which control skin colour
- C Which control the mechanism for blood-clotting
- D Which control the formation of haemoglobin