How many autosomes are in a human somatic cell

For example, in humans , somatic cells contain 46 chromosomes organized into 23 pairs. By contrast, gametes of diploid organisms contain only half as many chromosomes. In human beings, somatic cells contain 46 chromosomes, while germ cells contain only 23 chromosomes. Asked by: Merien Doll asked in category: General Last Updated: 10th February, How many chromosomes are in a human somatic cell how many are autosomes?

How many XY combinations are there? How many autosomes do females have? Why are chromosomes in pairs? The 22 pairs of homologous chromosomes contain the same genes but code for different traits in their allelic forms since one was inherited from the mother and one from the father. So humans have two homologous chromosome sets in each cell, meaning humans are diploid organisms.

What is the function of chromosome 1? Chromosome 1 likely contains 2, to 2, genes that provide instructions for making proteins. These proteins perform a variety of different roles in the body.

The sex chromosomes are odd arranged separately. How many autosomes do humans have? Mohan M. Nov 17, Human somatic cells have 22 pairs of autosomes and a pair of sex chromosomes. Explanation: In human somatic cells the number of chromosomes present is 23 pairs. That is, Chromosome 1, with the smallest number, is actually the largest chromosome. It has almost 3, genes on it. And we go down to the smallest chromosomes, the ones with the largest numbers.

You think that would be Chromosome 22, since we have Chromosomes 1 through 22, which only has about genes, but in fact Chromosome number 22 is not the smallest of the autosomes. Traits are the different forms of a characteristic. For example, the shape of earlobes is a characteristic with traits of free or attached.

Each copy of the homologous pair of chromosomes originates from a different parent; therefore, the copies of each of the genes themselves may not be identical. The variation of individuals within a species is caused by the specific combination of the genes inherited from both parents. For example, there are three possible gene sequences on the human chromosome that codes for blood type: sequence A, sequence B, and sequence O.

Because all diploid human cells have two copies of the chromosome that determines blood type, the blood type the trait is determined by which two versions of the marker gene are inherited. It is possible to have two copies of the same gene sequence, one on each homologous chromosome for example, AA, BB, or OO , or two different sequences, such as AB. Minor variations in traits such as those for blood type, eye color, and height contribute to the natural variation found within a species.