46
23
humans can easily adapt to many different types of envronments.
It is different for different species but in Humans, each sperm (male gamete) has 23 chromosomes out of which 22 are autosomes and 1 is a sex chromosome.
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In terms of base pairs, the X chromosome is about 155 megabases (million bases), and the Y is about 57 megabases. Note that there can be variation in the lengths of Y chromosomes between men, due to different amounts of constitutive heterochromatin on the long arm. That is, the long arm of the Y contains repeated sequences. The number of these sequences can be different between individuals, thus the size of the chromosome can be different between men.
23
23
humans can easily adapt to many different types of envronments.
Humans have 23 chromosomes in their sex cells.
It is different for different species but in Humans, each sperm (male gamete) has 23 chromosomes out of which 22 are autosomes and 1 is a sex chromosome.
There are at least 28 genes in humans that encode at least 19 different types of collagen
Many scientists think the 24th chromosome fused together and that is why humans have 23.
Humans have basically 23 pairs of chromosomes while cats have 19 pairs of chromosomes. Humans: females= 46 X chromosome, males= 45 X chromosomes, 1 Y chromosome. Cats: Females =38 X chromosomes, m ales= 37 X chromosomes, 1 Y chromosome.
64
Humans have 23 chromosomes in each cell
23 haploid sex cells
In terms of base pairs, the X chromosome is about 155 megabases (million bases), and the Y is about 57 megabases. Note that there can be variation in the lengths of Y chromosomes between men, due to different amounts of constitutive heterochromatin on the long arm. That is, the long arm of the Y contains repeated sequences. The number of these sequences can be different between individuals, thus the size of the chromosome can be different between men.