genetics gametes

Gene Mutation - The variations at the level of the gene which form the basis of the differences between related organism as well as the diversity among organisms is called gene mutation. Gene mutation is defined as a sudden discrete change in the genetic material of gene which is heritabl..

Asexual reproduction is the production of new individuals by mitotic divisions from a single parent. It does not involve the fusion of gametes, also called sex cells. There are many types of asexual reproduction, all producing individuals that are genetically identical to the p..

In bacterial sexual reproduction there is no meiosis, formation of gametes and zygote. Instead, it involves transfer of a portion of genetic material (DNA) from a donor cell to a recipient cell. This process is called as genetic recombination or parasexuality . It is k..

It is a modified form of reproduction, where seeds are formed without the fusion of gametes. In this method, a diploid cell of the nucleus develops into an embryo. The genetic constitution of the embryo will be identical to the parent. An organism that reproduces by apomixes is..

Asexual Reproduction - Asexual reproduction is the production of new individuals by mitotic divisions from a single parent. It does not involve the fusion of gametes, also called sex cells. There are many types of asexual reproduction, all producing individuals that are genetically..

Heredity depends upon the protoplasmic continuity between the parent and the offspring. It is the gametes that establish the continuity between parent and offspring and hence, the mechanism of inheritance operates across this exceedingly slender protoplasmic bridge. The machinery of inher..

These are genetic variations brought about due to shuffling of parental genes into new combinations. Thus, the resulting offspring exhibits genotypic variations. Genetic recombinations occur due to: Independent assortment of chromosomes during meiosis Reciprocal recombinat..

Sex Determination - It is the phenomenon where in the sex of an individual organisms becomes fixed soon after the formation of a zygote, due to the specific composition of sex chromosomes. The process of sex determination by allosomes is called genetic or chromosomal sex determination. It..

Aneuploidy is a condition, which represents a change in chromosome number. Such a change is most commonly caused in the reproductive cells during the process of gametogenesis. The most common cause for aneuploidy is a phenomenon called non-disjunction. It represents a failure in the separation of ..

Only one parent is involved All cell division are mitotic divisions The offspring is genetically identical to the parent. It is a clone. It is a very rapid mode of multiplication. Does not involve the fusion of gametes. Is found in protozoans, sponges, coelentra..