Explain the following terms:
(3) Alleles
Alleles - are the alternative forms of a gene responsible for the alternative forms of a character, occupying the same position on homologous chromosomes
Mention the difference between mitosis and meiosis with reference to
1. Number of daughter cells formed at the end of the division.
2. The chromosome number of the daughter cells formed.
Draw a diagram of the nucleus of a cell, having chromosome number 6, as it would appear in the metaphase stage of mitosis and label the following parts in the diagram:
1. Aster
2. Achromatic spindle
3. Chromatid
4. Centromere
Account for the following briefly:
(iv) Herbaceous plants growing in well-watered soils are found to wilt on a hot day.