Tissue: A group of cells performs the duty of manufacturing
food; another group stores it, while the other group conducts the transport of food
materials. There is further a group of cells that gives mechanical strenght to
some organs. In many cases it is observed that a group of cells originating
from a single origin remain closely attached in a place and collectively
perform a similar type of function. This type of cells in...
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Whether the child will be a son or daughter
Now we can understand easily that the father or mother is
responsible for the birth of a son or daughter. Both male and female have 44
autosomes, a pair of sex chromosome. Sex chromosome of a female is XX and that
of the male is XY. The male gamete (sperm) bears X and Y chromosome. But the
female gamete (egg) bears X and X. If the X bearing...
Male-Female determining Chromosome
Every
living being has a definite number of chromosomes. In human beings there are 23
pairs of chromosome. Among them 22. pairs are similar in both male and female,
these are Autosomes . Members of the remaining pair of chromosome are different
in male and female. This pair of chromosome determines the sex of human beings.
As they determine the sex, so they are called X and y sex chromosome or sex determining
chromosome. One...
Different Stages of Mitosis
Mitosis is a continuous process. The process is completed by a
complex method. According to the sequence
and stages, this continuous process is divided into five stages. The stages
are:
(1)Prophase,
(2) Pro-Metaphase,
(3) Metaphase,
(4) Anaphaseand
(5) Telophase.
...
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