What are the rungs of the "DNA ladder" made of?
Important Questions on Structure of Chromosomes, Cell Cycle and Cell Division
Genes are specific sequences of bases on a chromosome.
A nucleotide is composed of a sulphate, a sugar (pentose) and a nitrogenous base.
Correct the following statements for mistakes, if any.
Nucleosomes are groups of cysteine molecules surrounded by DNA strands.
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.
As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface.
Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.
Mitotic cell division can be a mode of reproduction.
