In particular, it explains that humans have one fewer chromosome pair in their cells than apes, due to a mutation found in chromosome number 2 that caused two chromosomes to fuse into one.

Created with Sketch. This rare sex chromosome abnormality, also referred to as Jacob’s syndrome, occurs when a male infant is born with an extra Y chromosome. Some symptoms include being tall ...

Based on his observations, Henking hypothesized that this extra chromosome ... beetle Tenebrio molitor (Figure 2), Stevens noted an unusual-looking pair of chromosomes that separated to form ...

Patients with Klinefelter and triple X syndromes show an increased prevalence of SLE and Sjögren disease, likely due to the synergistic interaction of the extra X chromosomes.

Researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has likely been around for 480 million years, since before octopuses split apart from the nautilus on ...

Around the same time, British biologist Charles Darwin (Figure 2) independently proposed that ... fly's cells did indeed appear to contain an extra chromosome. Specifically, these cells contained ...