<span>The Growth hormone (GH) is of greatest importance in human development. It is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans. GH is produced by the pituitary gland, and it also helps to regulate body composition, body fluids, and muscle and bone growth.</span>
The results of Harlow's experiment were
overwhelming with an average infant monkey spending
17-18 hours per day on the
cloth mother and
less than an hour per day on the wire mother.
Harlow Harlow established the
nature of affection by experimenting on infant monkeys responses to compare the
influence of nursing from the influence of contact comfort. To study this, he compared
a wire mother who provided food, and a cloth mother who did not provide food.
The infant monkeys preferred contact comfort and spent more time with the cloth
mother than the wire mother.
The factors are: The size of the sample, the extraction method, the method of purification and preservation of the DNA.
The quantity and quality of DNA can be greatly improved by performing PCR.
* Purification of nucleic acids is a key step for functional studies in biology. Because of the great diversity of living organisms in nature, purification becomes a real challenge for researchers, especially cell lysis.
The evolution of lysis methods has made it possible to improve efficiency, speed and simplicity. But, this lysis step remains a crucial step for the efficiency and the quality of the purification.
One the XY belong to the male (XX is for females ) and these chromosomes are sex chromosomes and are always the same in every human being ( well except for some genetic disorders)
