Sex Chromosomes

Some articles on sex, sex chromosomes, sex chromosome, chromosome, chromosomes:

Heterogametic Sex
... Heterogametic sex refers to the sex of a species in which the sex chromosomes are not the same ... For example, in humans, males, with an X and a Y sex chromosome, would be referred to as the heterogametic sex, and females having two X sex chromosomes would be referred to ... However, in birds, and some reptiles, males have two Z sex chromosomes and so are the homogametic sex, while females, with one Z and one W chromosome, are the heterogametic sex ...
Cannabis - Reproduction - Mechanisms of Sex Determination
... Cannabis has been described as having one of the most complicated mechanisms of sex determination among the dioecious plants ... Many models have been proposed to explain sex determination in Cannabis ... Based on studies of sex reversal in hemp, it was first reported by K ...
Ectrodactyly–ectodermal Dysplasia–cleft Syndrome - Current Research
... human karyotype includes 22 pairs of autosomal or non-sex chromosomes and one pair of sex chromosomes, constituting a total of 46 chromosomes ... During reproduction, each parent contributes 23 chromosomes 22 autosomal chromosomes and one sex chromosome ... is an abnormal gene on one of the autosomal (non-sex) chromosomes from either parent ...
Platypus - Evolution
... researchers at the Australian National University discovered the platypus has ten sex chromosomes, compared with two (XY) in most other mammals (for instance, a male platypus is always XYXYXYXYXY ... Since the platypus lacks the mammalian sex-determining gene SRY, the mechanism of sex determination remains unknown ...
Number of Chromosomes in Various Organisms - Eukaryotes
... These tables give the total number of chromosomes (including sex chromosomes) in a cell nucleus ... of autosome, each present as two copies, and two sex chromosomes ... This gives 46 chromosomes in total ...