Chromosomes in a sentence

Others are tetraploid (four sets, 28 chromosomes total), hexaploid (six sets, 42 chromosomes total), octoploid (eight sets, 56 chromosomes total), or decaploid (ten sets, 70 chromosomes total).

Genetic traits are contained within the deoxyribonucleic acid (DNA) of chromosomes —by combining one of each type of chromosomes from each parent, an organism is formed containing a doubled set of chromosomes.

When a female Komodo dragon (with ZW sex chromosomes) reproduces in this manner, she provides her progeny with only one chromosome from each of her pairs of chromosomes, including only one of her two sex chromosomes.

Genetic analysis revealed she had a total of 76 chromosomes, compared to the 78 chromosomes of the domestic dog and 74 of the pampas fox.

According to the researchers, the X chromosomes packaged into sperm and develops into a female offspring may have higher levels of methylation than the X chromosomes passed along in eggs from a mother to the next generation.

In humans, each cell contains 23 pairs of chromosomes, including one pair of sex chromosomes - the 'X' and 'Y' - that differ between males and females.

All other chromosomes in these organisms are diploid, but organisms may inherit one or two X chromosomes.

A principal finding is that the X chromosomes of humans and chimps appear to have diverged about 1.2 million years more recently than the other chromosomes.

As an example, the chromosomes of common wheat are believed to be derived from three different ancestral species, each of which had 7 chromosomes in its haploid gametes.

Autopolyploidy results from the sudden multiplication in the number of chromosomes in typical normal populations caused by unsuccessful separation of the chromosomes during meiosis.

Because eukaryotes have linear chromosomes, DNA replication is unable to reach the very end of the chromosomes, but ends at the telomere region of repetitive DNA close to the ends.

Chimpanzees (the closest living relatives to modern humans) have 48 chromosomes (as well as the other great apes : in humans two chromosomes fused to form chromosome 2 ).

During cell division these chromosomes are duplicated in the process of DNA replication, providing each cell its own complete set of chromosomes.

Evolution of sex-determination systems Origin of sex chromosomes The ends of the XY chromosomes, highlighted here in green, are all that is left of the original autosomes that can still cross-over with each other.

For example, the standard house mouse karyotype has only telocentric chromosomes. citation citation Humans do not possess telocentric chromosomes.

His two principles were the continuity of chromosomes and the individuality of chromosomes.

Horse-donkey hybrids are almost always sterile because horses have 64 chromosomes whereas donkeys have 62, producing offspring with 63 chromosomes.

Human cells have 23 pairs of chromosomes (22 pairs of autosomes and one pair of sex chromosomes), giving a total of 46 per cell.

Human chromosomes Chromosomes in humans can be divided into two types: autosomes (body chromosome(s)) and allosome ( sex chromosome (s)).

In Oenothera lamarchiana the diploid species has 14 chromosomes, this species has spontaneously given rise to plants with 28 chromosomes that have been given the name Oenothera gigas.