These chromosomes determine an individual's gender

These type of twins are genetically the same

Scientists study whole chromosomes by using images of chromosomes stained during this phase of mitosis.

This is the cell division during which sister chromatids fail to separate properly

Another pair of chromosomes is called this

This rate is the percentage of twins who both express a given trait

The pairs of homologous chromosomes are arranged in decreasing size to produce a micrograph called this

If nondisjunction occurs during meiosis I or meiosis II, the resulting gametes will not have the correct number of this

The offspring's gender is determined by this combination of sex chromosomes

If this is inherited, both identical twins will have the same of it.

scientists have found that chromosomes end in protective caps called this

This mental disorder is a result of an extra chromosome 21.