Animal chromosome numbers range from 254 in hermit crabs to 2 in a species of roundworm. The fern called Ophioglossum reticulatum has 1260 chromosomes! Humans have 46, chimpanzees have 48, and yes, potatoes also have 48.

80 chromosomes

The mitotic and meiotic chromosomes of the semiaquatic rodent Ichthyomys pittieri (Rodentia, Cricetinae) from Venezuela were analyzed by means of conventional staining and several banding techniques. The diploid chromosome number of this rare species is 2n = 92, which is the highest value known for mammals.

“Intersex” birds are those that show plumage and bare-parts colour seemingly intermediate between male and female. This is commonly seen in Mallards and is also known to occur in other ducks and perhaps other birds. Such birds are often confused with hybrids.

Male cardinals are brilliant red all over, with a reddish bill and black face immediately around the bill. Females are pale brown overall with warm reddish tinges in the wings, tail, and crest. They have the same black face and red-orange bill.

Half-female, half-male birds are a very rare phenomenon, explains Professor Brian Peer at Western Illinois University, who has surveyed bilateral gynandromorph northern cardinals in the US. The resulting individual is a male-female chimera.”

gynandromorph

Hermaphroditism, the condition of having both male and female reproductive organs. Hermaphroditic plants—most flowering plants, or angiosperms—are called monoecious, or bisexual.

“Most gynandromorph individuals are infertile, but this one may actually be fertile as the left side is female, and only the left ovary in birds is functional,” Hooper told National Geographic.

Many of the gynandromorphs did not lay eggs, presumably because either the focus controlling egg transfer from the ovaries to the uterus or the one controlling egg deposition was composed of male tissue.

Gynandromorphs are found in arthropods and birds but they do not occur in humans and other higher organisms in which sex determination is more complex.

Gynandromorphs are individuals that contains both male and female characteristics. This leads to one of the two cells having sex chromosomes that cause male development and the other cell having chromosomes that cause female development.

: an abnormal individual exhibiting characters of both sexes in various parts of the body : a sexual mosaic.

Here, we focus on gynandromorphs—another yet largely neglected type of mutation—and ask whether they are important to our understanding of evolution. Gynandromorphs are individuals that display a mosaic of distinctly male and female tissues or cell populations.

Researchers discover honeybee gynandromorph with two fathers and no mother. A team of researchers at the University of Sydney has discovered a honeybee gynandromorph with two fathers and no mother—the first ever of its kind observed in nature.