some regions of chromosomes do not code for proteins
do not code for proteins but are important for gene regulation and chromosome structure. These repetitive DNA sequences can vary in length among individuals and are associated with genetic disorders such as Down syndrome when present in abnormal amounts. They play a role in chromosomal organization and stability.
Human Cells have 42 chromosomes Human Sex cells such as womans eggs and male sperm contains 21
Exactly half of all chromosomes come from mother. The other half comes from father. This is true for ALL species that sexually reproduce.
46 Chromosomes in the Human body cells.Body cells have "pairs" of chromosomes while sex cells have only single sets of chromosomes. The human body cells have 22 pairs of autosomes and 1 pair of sex chromosomes for a total of 23 pairs or 46 chromosomes. Sex cells for humans will have half of that (because they are not paired) so a total of 23 chromosomes.23 pairsThe short answer is 46 chromosomes in the human body cell.SaveEggs and sperm have only 23 each.Then there is a whole host of genetic disorders, trisomy 21 (Down's syndrome), for example where there are three number 21 chromosomes and each cell would have 47 chromosomes. The syndrome is caused by having too much information--one too many chromosomes.
Real human chromosomes consist of different number of base pairs. For example, chromosome 1 is the largest and contains about 249 million base pairs, while chromosome 21 is the smallest and contains about 48 million base pairs. In total, all 46 human chromosomes contain approximately 3.2 billion base pairs.
do not code for proteins but are important for gene regulation and chromosome structure. These repetitive DNA sequences can vary in length among individuals and are associated with genetic disorders such as Down syndrome when present in abnormal amounts. They play a role in chromosomal organization and stability.
Chromosomes 21 and 22 are the smallest human autosomes. Chromosome 22 contains approximately 43 million DNA base pairs. Chromosome 21 contains roughly 32 million base pairs. These were the first two hu8man Chromosomes whose sequences were determined.
21 somatic chromosomes + 2 sex chromosomes (XX in an ovum or XY in a sperm).
Human cells have 23 pairs of chromosomes, giving a total of 46 per cell.
Human Cells have 42 chromosomes Human Sex cells such as womans eggs and male sperm contains 21
well if human chromosomes number 21 does not separate during fertilization the baby will be with down syndrome. at fertilization of the egg with a normal sperm the zygote contain three chromosome number 21 (trizomic 21) hence the zygote contain 47 chromosome instead of 46.
Yes, the smallest human chromosome (chromosome 21) is approximately 10 times longer than many bacterial chromosomes. Human chromosomes are large linear structures made up of DNA and associated proteins, whereas bacterial chromosomes are typically smaller, circular DNA molecules.
A human male normally has 46 chromosomes. Some configurations of 48 chromosomes would result in a viable male offspring. This individual would have a trisomy of the sex chromosomes such as XYY and also a trisomy of chromosome 21 and have Down Syndrome.
24 chromosomes
21 chromosomes
Exactly half of all chromosomes come from mother. The other half comes from father. This is true for ALL species that sexually reproduce.
46 Chromosomes in the Human body cells.Body cells have "pairs" of chromosomes while sex cells have only single sets of chromosomes. The human body cells have 22 pairs of autosomes and 1 pair of sex chromosomes for a total of 23 pairs or 46 chromosomes. Sex cells for humans will have half of that (because they are not paired) so a total of 23 chromosomes.23 pairsThe short answer is 46 chromosomes in the human body cell.SaveEggs and sperm have only 23 each.Then there is a whole host of genetic disorders, trisomy 21 (Down's syndrome), for example where there are three number 21 chromosomes and each cell would have 47 chromosomes. The syndrome is caused by having too much information--one too many chromosomes.