In genetics, a chromosome is a threadlike structure of nucleic acids and protein which is located in the nucleus of living cells, It carries the genetic information of an organism in the form of genes.
The genotypes of an organism are determined by the combination of alleles they inherit from their parents during sexual reproduction. Each parent contributes one allele for each gene, resulting in a unique genetic makeup for each individual. Gene mutations and genetic recombination can also influence an organism's genotype.
Technically we have 23 chromasomes (you will never hear a paper refer to chromasome 24 or 37 etc), but we have two copies of each, bringing the total to 46. This includes the sex chromasomes.
People have 23 chromosomes in their gametes – 22 autosomes and one sex chromosome. This is the result of a process called meiosis, which halves the number of chromosomes in a cell to produce gametes with half the genetic material.
A recessive gene is a gene that is only expressed if an individual has two copies of it, one inherited from each parent. In the presence of another dominant gene, the recessive gene's trait is not expressed.
1. primary spermatocyte (dipolotid (46)) ------1st meiotic division------ produce: 2 secondary spermatocytes (haploid (23)) ------2nd meiotic division-------- Producing four spermatids (haploid (23)) so the difference is that in the begnning u have a dipoloid cell with 46 chromosomes, and in the end u wil have a haploid cell with 23 chromosomes that in the case are ready to meet the egg, and produce a zygote (diplotid, with 46 chromosomes) that wil develop to be a child.
soul life Carabanna chromatic Chromasome
Yes- it is transmitted from parent to child by a chromasome.
it's the duplication of the 21st chromasome
Females are rarely colourblind because they have 2 X chromasomes. They would therefore have to have inherited the gene from both parents (X from the mother and X from the father). As males have only 1 X chromasome and there is no corresponding place on the Y chromasome for the matching allele (gene), men who inherit the gene on the X chromasome (from their mothers) are automatically colourblind.
The sperm cell is haploid (has half as many chromasomes as the diploid nerve cell)The sperm cell can contain more mutations (depending on the age of the man, this is the basis of anticipation)The sperm cell's chromasome has undergone recombination (I'm assuming you know what that is)
The genotypes of an organism are determined by the combination of alleles they inherit from their parents during sexual reproduction. Each parent contributes one allele for each gene, resulting in a unique genetic makeup for each individual. Gene mutations and genetic recombination can also influence an organism's genotype.
well 8i think this could be a hereditary condition called gingerism in which the chromasome for pube legnth is crossed over with the smell gene on the 18th chromasomje creating this effect sollution== wash, deoderize or shave ur smelly areas if this problem continues after you have done all three you have cancer of the pubism
Technically we have 23 chromasomes (you will never hear a paper refer to chromasome 24 or 37 etc), but we have two copies of each, bringing the total to 46. This includes the sex chromasomes.
Yes, women have two X chromosomes which provides them with a backup copy of certain genes. This can offer some protection from genetic diseases that are caused by mutations in genes on the X chromosome, as women have a second copy that may compensate for any abnormalities.
Color blindness is a sex-linked genetic disorder. The reason that it is more prevalent in males is because the disorder is linked the the X-chromasome. If a male inherits an X chromosome that is defective, then they will be color blind. However, a female has two X chromosomes which means she can receive a defective chromosome and only be a carrier of the mutation. If she receives two defective x chromosomes, she will be colorblind.
An individual with Down Syndrome has the presence of all or part of an extra 21st chromosome.
Chromosome banding is a laboratory technique used to identify specific regions of chromosomes through the application of various staining methods, resulting in a pattern of light and dark bands. This allows for the visualization of chromosomal structures, aiding in the identification of chromosomal abnormalities, such as deletions, duplications, or translocations. Common banding techniques include G-banding, which uses Giemsa stain, and R-banding, which provides a reverse pattern. Chromosome banding is essential in genetic research, diagnostics, and cytogenetics.