Sentences with phrase «different sex chromosome»
Not exact matches
It finally reveals the gene content of the two different Y chromosome systems that evolved in mammals,» says Dr Grützner, who has led research into monotreme sex chromosomes for more than 10 years.
https://www.sciencedaily.com/
Later, a different group found that the sex chromosomes in the jammed - together leftovers were always of the XX variety — female — regardless of the devil host's gender.
Two identical sex chromosomes make a male Komodo, and two different ones make a female.
The idea was to use the standard idea of sex determined by sex chromosomes — XX for female and XY for males — and to ask what would happen if culture affected the different numbers of each being produced.
«This suggests that the mammal and bird sex chromosome system is not as different as we have always thought,» says Marilyn Renfree, a zoologist at the University of Melbourne, Australia.
This is why two brothers in the same family can look and act totally different from one another even though they come from the same parents — it all depends on which genes (chromosomes) were randomly chosen when producing the sex cells of the mother and father.
These different paths may be influenced by the arrangement of sex chromosomes, the functioning of our gonads (i.e. testes, ovaries), and our bodies» response to hormones.
The great apes (orangutans, gorillas, chimpanzees, bonobos and humans) descended from a common ancestor around 13 million years ago, and since then their sex chromosomes have followed very different evolutionary paths.
These results demonstrate that different autosomes were involved in translocations with sex chromosomes in closely related lineages of anole lizards and that several sequential microautosome / sex chromosome fusions lead to a remarkable increase in size of Norops sagrei sex chromosomes.
In relation to the differences between genders, this bias could be explained by the role of sex chromosomes, the different regulatory pathways underlying sexual development of most organs, and, finally, the lifelong fluctuating impact of sex hormones.
The presence of two identical sex chromosomes results in a male komodo dragon, while two different ones results in a female.