The research suggest octopus and other cephalopods, like squid and cuttlefish, all rely on the ancient chromosome to ...

The octopus just revealed another one of its secrets: what determines its sex. University of Oregon researchers have ...

Females (XX) carry twice as many X-linked genes on their sex chromosomes as males (XY). How do cells control gene expression to manage this potentially lethal dosage problem? A prime example of X ...

For example, in the XX-XO system found in crickets, grasshoppers, and some other insects, sperm cells that lack an X chromosome (referred to as O) determine maleness. Here, females carry two X ...

Where Aa = female genotype close genotypeThe alleles that an organism has for a particular characteristic, usually written as letters. Probability close probabilityThe extent to which something is ...

Half of the possible offspring have the same allele combination; AA homozygous dominant and the other half have the Aa heterozygous combination. Probability close probabilityThe extent to which ...