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Sexual

sexual

Of or pertaining to sex, or the sexes; distinguishing sex; peculiar to the distinction and office of male or female; relating to the distinctive genital organs of the sexes; proceeding from, or based upon, sex; as, sexual characteristics; sexual intercourse, connection, or commerce; sexual desire; sexual diseases; sexual generation.

(Science: biology) Sexual dimorphism, the condition of having one of the sexes existing in two forms, or varieties, differing in colour, size, etc, as in many species of butterflies which have two kinds of females.

(Science: botany) Sexual method, the selective preference of one sex for certain characteristics in the other, such as bright colours, musical notes, etc.; also, the selection which results from certain individuals of one sex having more opportunities of pairing with the other sex, on account of greater activity, strength, courage, etc.; applied likewise to that kind of evolution which results from such sexual preferences. In these cases, therefore, natural selection seems to have acted independently of sexual selection. (A. R. Wallace)

Origin: L. Sexualis, fr. Sexus sex: cf. F. Sexuel.


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Why can't sperm cells divide mitotically?

Sure it can and many haploid cells do. Just our sexual cells are not capable of it.

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by JackBean
Mon Mar 03, 2014 12:44 pm
 
Forum: Cell Biology
Topic: Why can't sperm cells divide mitotically?
Replies: 1
Views: 119

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

... any other human culture? Just look at the United States for proof. How do you account for the fact that all "races" of humans are sexually compatible and able to produce viable offspring? You see, these are the facts and then there are your delusions. But the world is governed ...

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by Seth90210
Sun Feb 16, 2014 9:35 pm
 
Forum: Human Biology
Topic: Brain size=IQ level theory (Blacks vs Whites & Asians)
Replies: 68
Views: 218718

Re: A theoretical question - Genetic manipulation

... that comes to mind, that already exists, is toxoplasma gondii, which interestingly, can cause a cerebral infection which has been found to change sexual behavior in women - making them more promiscuous. It's theorized that this is because the virus wants to spread to a new host. 'A kind of 'viral ...

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by Maitreya
Mon Dec 09, 2013 2:25 am
 
Forum: Microbiology
Topic: A theoretical question - Genetic manipulation
Replies: 3
Views: 2206

Re: Multicellular prokaryote

... to believe that these other important characteristics are related to that and to each other: endomembrane system, membrane bound organelles, sexual reproduction (associated with diploid or more), and endocytosis. Quite literally, eukaryotic cells in their own right are thought to have been ...

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by thirdprometheus
Fri Nov 15, 2013 7:45 pm
 
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 24
Views: 17566

Re: Why must we avert the genome of Eden?

... classification would be impossible. There we would expect to find a chaotic mess of traits, not order and structure. The second problem is that asexual reproduction combined with frequent and effective HGT makes sexual reproduction superfluous. I call this problem the catch 22 of Darwinism. You ...

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by wildfunguy
Fri Oct 04, 2013 7:49 pm
 
Forum: Evolution
Topic: Why must we avert the genome of Eden?
Replies: 6
Views: 3023
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