State whether the following statement is true or false.
Crossing-over between chromatids can occur only between homologous chromosomes.
Crossing over:
Final answer: The given statement is true.
Name the stage of the cell cycle at which one of the following events occur:
(i) Chromosomes are moved to the spindle equator (ii) Centromere splits and chromatids separate (iii) Pairing between homologous chromosomes takes place (iv) Crossing over between homologous chromosomes takes place
Mention whether the following statements are true (T) or false (F). Give reason in support of your answer. (a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface. (T/F) (b) The unfertilised human egg has half the number of chromosomes of the body cells. (T/F) (c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in the telophase. (T/F) (d) Mitotic cell division can be a mode of reproduction. (T/F) (e) Crossing-over between chromatids can occur only between homologous chromosomes. (T/F)