Chromosomal mutation A mutation is a change in the amount, arrangement or structure of DNA of an organism. This produces a change in genotype which […]
Ploidy Genomatic mutation is a chromosomal mutation in which the numerical changes in chromosomes or variation in chromosomal numbers occurs, known as numerical chromosomal aberration. […]
Sex determination in human and role of various genes Sex determination is defined as the developmental decision that directs the bipotential gonad to develop as […]
Three point test cross Three point test cross in Drosophila: Wild-type Male Drosophila was crossed with female Drosophila homozygous for three recessive X-linked mutations—scute (sc) […]
Gene mapping Gene mapping is the process of determining the genes and their location along the length of chromosome. T. D Morgan pave the foundation […]
Chromosomal mechanism of sex determination #Sex determination: Sex determination is the process by which the male and female gametes after fusion produce a zygote which […]
Theories of sex determination in organisms The mechanism of sex determination are similar in both plants and animals. I. Classical Theories of sex determination: Metabolic […]
Karyotype: The word ‘karyotype’ is derived from Greek word “kernel” which means content of nucleus. The term Karyotype is referred to a group of characteristics […]
Chromosome banding technique: Study of chromosome number and structure by staining the dividing cells with certain dyes and then examining them under microscope for cytogenetic […]
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