Question 1:
Give the definition of the following terms:
(a) karyokinesis
(b) cytokinesis
(c) chromatin
(d) homologous chromosomes
Answer:
(a)
Karyokinesis is a stage in cell division that involves the division of nucleus.
(b)
Cytokinesis is the cytoplasm division stage.
(c)
Chromatin is double-stranded DNA that is coiled around histone proteins.
(d)
Homologous chromosomes is a pair of chromosomes from the same set of chromosomes, with one chromosome from male parent and the other from female parent.
Give the definition of the following terms:
(a) karyokinesis
(b) cytokinesis
(c) chromatin
(d) homologous chromosomes
Answer:
(a)
Karyokinesis is a stage in cell division that involves the division of nucleus.
(b)
Cytokinesis is the cytoplasm division stage.
(c)
Chromatin is double-stranded DNA that is coiled around histone proteins.
(d)
Homologous chromosomes is a pair of chromosomes from the same set of chromosomes, with one chromosome from male parent and the other from female parent.
Question 2:
Predict what will happen if the cells in the reproductive organs of humans are unable to produce haploid cells.
Answer:
The resulting zygote will have 92 chromosomes (46 + 46), which is double that of the parent’s chromosomes. If this happens, the zygote produced will degenerate by itself.
Predict what will happen if the cells in the reproductive organs of humans are unable to produce haploid cells.
Answer:
The resulting zygote will have 92 chromosomes (46 + 46), which is double that of the parent’s chromosomes. If this happens, the zygote produced will degenerate by itself.