in animals meiosis results in gametes and fertilization results in

Meiosis - This type of cell division occurs in reproductive cells (gametes). The male gamete is known as the sperm in animals and the female gamete is known as the ovum (egg). These gametes, after they are formed, have no future unless the..

Meiosis - It is a type of cell division that occurs only in the reproductive cells and hence it is known as germ cell division. The daughter cells resulting from meiosis will carry half the number of chromosomes and half the amount of genetic material compared to the p..

Meiosis - Meiosis is a cell division occurs in reproductive cells (gametes). The male gamete is known as the sperm in animals and the female gamete is known as the ovum (egg). These gametes, after they are formed, have no future ..

Meiosis becomes significant for the following reasons. It brings about a reduction in the chromosome number from a diploid (2n) condition to a haploid (n) condition. Such a reduction becomes necessary for maintaining the chromosome number. It provides chance for the appearance of new gene..

With the rediscovery of Mendelism, several scientists focussed on identifying the basis for inheritance. William Sutton recognised a close parallelism between the transmission of 'factors' identified by Mendel and the behaviour of chromosomes during meiosis and fertilization. Th..

Waldeyer is credited with the discovery of chromosomes in the year 1888 within the nucleus. He observed them as darkly stained bodies. However, it was the American William Sutton who noticed the similarities between the behaviour of the mendelian factors or genes and that of the chromosomes during ..

In multicellular organisms, the male gametes called the are produced by the male reproductive part and the female gametes called the eggs are produced by the female reproductive part. The male gamete of one individual fertilizes the female gamete..

The idea of independent assortment can be explained as follows: 1. Let us think of two pairs of contrasting characters represented by the alleles R and r, Y and y. There are two ways by which the two homologous chromosomes segregate during metaphase I of first meiosis. This in turn leads ..

show a primitive type of sexual reproduction called genetic recombination. In this process, the exchange of genetic materials takes place by a process called conjugation . Conjugating bacterial cells are in contact through a hollow tube called pilus. In the higher organisms, sexual reproduct..

According to the modified cell principle, new cells arise only from pre-existing cells. Cells transfer their genetic information only by way of cell division. The mode of cell division is largely the same in all living organisms indicating the unity of life. Cell division becomes necessa..