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We're taught that chromosomes define biological sex As of 2021, there were about 44 million more males than females in the global population. Xx = female, and xy = male

However, it's not quite that straightforward But by 2050, the worldwide sex ratio is expected to even out, according to recently released population projections from the united nations Hank green hosts as we explain how science proves that biological sex.

Humans have 22 pairs of numbered chromosomes (autosomes) and one pair of sex chromosomes (xx or xy), for a total of 46

Each pair contains two chromosomes, one coming from each parent, which means that children inherit half of their chromosomes from their mother and half from their father. Humans and most other mammals have two sex chromosomes, x and y, that in combination determine the sex of an individual Females have two x chromosomes in their cells, while males have one x and one y. The typical human karyotype contains 22 pairs of autosomal chromosomes and one pair of sex chromosomes

The most common karyotypes for a female contain two x chromosomes and are denoted for the sex xx Males usually have both an x and a y chromosome, denoted for the sex xy. There would still be males, and they'd still be able to reproduce The fate of the y chromosome has captured the world's attention for years now, and yet beneath the surface of sensationalized headlines, many don't realize a potent scientific debate is brewing, throwing two incompatible views of evolution into direct conflict.

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