Home Forum Dictionary Articles Tutorials Books Directory Share your work


Edit page | Page history | Printable version

Dictionary » S » Sexes

Sexes

Sex

1. The distinguishing peculiarity of male or female in both animals and plants; the physical difference between male and female; the assemblage of properties or qualities by which male is distinguished from female.

2. One of the two divisions of organic beings formed on the distinction of male and female.

3. (Science: botany) The capability in plants of fertilizing or of being fertilized; as, staminate and pistillate flowers are of opposite sexes. One of the groups founded on this distinction. The sex, the female sex; women, in general.

Origin: L. Sexus: cf. F. Sexe.


Please contribute to this project, if you have more information about this term feel free to edit this page



Results from our forum


Why not hundreds of different sexes, why only two ?

... mate with two others, but one of the two others could only mate with one other. Biochemically that would be very complicated. A maximum of two sexes was likely just the simplest, most efficient way to breed safely.

See entire post
by jyaron
Sun Aug 16, 2009 6:30 pm
 
Forum: Evolution
Topic: Why not hundreds of different sexes, why only two ?
Replies: 2
Views: 96

Why not hundreds of different sexes, why only two ?

Sexual reproduction started with some reciprocal exchange of genetic material between similar individuals. But later organisms had to deal with the problem of inbreeding depression. As a result of this, a mechanism that ensures that sexual reproduction occurs only between unrelated cells, was evolve...

See entire post
by YASHRAJ
Sun Aug 16, 2009 1:03 pm
 
Forum: Evolution
Topic: Why not hundreds of different sexes, why only two ?
Replies: 2
Views: 96

Natural selection is proven wrong

... on, then later the unused genes lose their function or take on a new one. What you call "coevolution" would then occur between the sexes, which in turn accounts for the current special-fit machinery. As long as one can reasonably recognize and mate with their own species there can ...

See entire post
by GaryGaulin
Tue Apr 28, 2009 1:39 pm
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16293

fraternal twins

... look similar, particularly given that they are the same age. However, DZ twins may also look very different from each other. They may be different sexes or the same sex. The same holds true for brothers and sisters from the same parents, meaning that DZ twins are simply brothers and/or sisters ...

See entire post
by Yasaman.herandy
Mon Sep 08, 2008 2:07 pm
 
Forum: Genetics
Topic: fraternal twins
Replies: 4
Views: 1133

Re: Brain size=IQ level theory (Blacks vs Whites & Asians)

... average about 80 cm3 (5 in3) larger than those of Africans and their descendants. Consider the following statistically significant comparisons (sexes combined) from recently conducted studies using the four techniques mentioned above. Using brain mass at autopsy, Ho et al. (1990) summarized ...

See entire post
by TJJ
Fri May 16, 2008 12:13 am
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 18
Views: 12468
View all matching forum results

This page was last modified 18:21, 5 May 2007. This page has been accessed 1,049 times. 
What links here | Related changes | Permanent link