by admin | Aug 8, 2020 | Genetics
Any variation in number of chromosomes (increase or decrease in the number of chromosomes) from normal number, or a change in the shape of a chromosome during the fertilization which leads to severe abnormality or disorder in the child after birth is called genetic...
by admin | Aug 8, 2020 | Genetics
It is the pictorial arrangement of total chromosomes of a cell according to their size during metaphase of cell division. Karyotype is made to study the abnormalities in chromosomes or to identify the sex of an organism. The karyotype of human beings is shown in fig....
by admin | Aug 8, 2020 | Genetics
Autosomes are those chromosomes which are not linked with sex. So autosomes are non-sex chromosomes. There are 23 pairs of chromosomes in human beings. Out of these 23 pairs, the first 22 pairs of chromosomes except 23rd pair are called autosomes. The chromosomes...
by admin | Aug 8, 2020 | Genetics
We have already studied that every species has a fixed number of chromosomes. And these chromosomes occur in pairs. This means that there are two chromosomes of each kind, or we can say that there are two sets of chromosomes. Thus a cell in which chromosomes occur in...
by admin | Aug 8, 2020 | Genetics
Chromosomes can be classified into four types depending on the position of the centromere in it. These are: 1. Metacentric Chromosomes The chromosomes in which the centromere is in exactly middle position are called metacentric chromosomes. These chromosomes are V...
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