sex chromosome

Those that do use the sex chromosome system have variations in how it happens.

Therefore, it is not a problem related to sexual development, nor with the sex chromosomes.

The platypus has 10 sex chromosomes instead of the normal 2.

On sex chromosomes, the amount of clusters is very low in both human and mouse.

The 0 denotes the absence of a second sex chromosome.

Most mammals have only one pair of sex chromosomes in each cell.

One is the inheritance of traits carried by the sex chromosomes.

The reason for this association is not known: no linkage has been found to genes on the sex chromosomes.

They may be caused by genes on either autosomal or sex chromosomes.

All the offspring also had very unusual sex chromosomes.

X and Y, the sex chromosomes, dictate whether a fetus is male or female.

Other species have different types of sex chromosomes.

The males are genetically identical to their mothers except that they have one less sex chromosome.

Each person has two copies of all chromosomes, except the sex chromosomes in men.

Age made no difference in sex chromosome abnormalities, which can cause sterility and other physical or mental problems.

Others reported slight increases in birth defects, especially abnormalities of the sex chromosomes.

There are other variations of sex chromosomes that lead to a variety of different physical expressions.

Sex chromosomes, however, are not wholly identical, and only exchange information over a small region of homology.

The human sex chromosomes are a typical pair of allosomes.

Calico cats are often used as an example in biology classes when discussing sex chromosomes.