In this article we will discuss about:- 1. Definition of Cleavage 2. Chemical Changes during Cleavage 3. Patterns 4. Nuclei of Cleavage Cells 5. Morula and Blastula. Definition of Cleavage: One of the peculiarities of sexual reproduction in animals is that the complex multicellular body of the offspring originates from a single cell—the fertilized egg. It is necessary, therefore, that [...]
In this article we will discuss about:- 1. Meaning of Meiosis 2. Kinds of meiosis 3. Process of Meiosis 4. First Meiotic Division 5. Homotypic or Second Meiotic Division 6. Significance of Meiosis. Contents: Meaning of Meiosis Kinds of meiosis Process of Meiosis First Meiotic Division Homotypic or Second Meiotic Division Significance of Meiosis 1. Meaning of Meiosis: In sexually [...]
Mitosis is a process of nuclear division in which duplicated chromosomes are faithfully separated from one another, producing two nuclei, each with one copy of each chromosome. The name 'mitosis' comes from the Greek word mitos, meaning 'thread'. It can take place in either diploid somatic or haploid cells like plant gametophytes and male bees. During mitosis, metabolic activities of [...]