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Sex characteristics

sex characteristics

Those characteristics that distinguish one sex from the other. The primary sex characteristics are the ovaries and testes and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction.


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Taqman probe design using FISH probe (need help)

Hi: Although they are both called "probes", FISH and Taqman probes have different characteristics. Probes for FISH need to be at least 1 kb long, to hybridize and "highlight" the target chromosomal DNA (metaphase chromosomes or interphase nuclei). ...

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by protoemics
Wed Feb 04, 2015 8:11 am
 
Forum: Bioinformatics
Topic: Taqman probe design using FISH probe (need help)
Replies: 2
Views: 543

Re: The evolution of facilitation and semelparity

... of generations, and the the only investment in each offspring is in the form of food reserves. If this sounds familiar to you, they are the characteristics of an r-selected species: Large number of offspring, low amount of parental investment. This is the most optimal strategy for an annual ...

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by Youngji
Sun Jan 11, 2015 11:55 am
 
Forum: Evolution
Topic: The evolution of facilitation and semelparity
Replies: 3
Views: 960

Re: Please read! About life history strategies!

... of generations, and the the only investment in each offspring is in the form of food reserves. If this sounds familiar to you, they are the characteristics of an r-selected species: Large number of offspring, low amount of parental investment. This is the most optimal strategy for an annual ...

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by Youngji
Sun Jan 11, 2015 11:30 am
 
Forum: Ecology
Topic: Please read! About life history strategies!
Replies: 2
Views: 1007

Re: Can human body hair disappear as a result of... clothing?

In this case, in addition to natural selection, sexual selection must also be operating: different sexes may show particular mating preference for other sex's characteristics. If females prefer hairy males and males prefer hairless females, the forces ...

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by Hrushikesh
Sun Dec 14, 2014 7:13 pm
 
Forum: Evolution
Topic: Can human body hair disappear as a result of... clothing?
Replies: 4
Views: 1381

Re: Mendel's Law

... his research was originally published. Genes are the units in which characteristics are passed from one generation to the next. For example, ... a red color. The first step that takes place in reproduction is for the sex cells in plants to divide into two halves, called gametes. The next step ...

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by Sheppie
Wed Dec 03, 2014 7:41 am
 
Forum: Genetics
Topic: Mendel's Law
Replies: 2
Views: 2435
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