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Sex ratio

Definition

noun

The proportion of males to females in a species or in a population.


Supplement

Primary sex ratio refers to the ratio at conception. Secondary sex ratio refers to the ratio at birth. Tertiary sex ratio refers to the ratio at maturity.


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genotype ratio and phenotype ratio in X linked allege

Ok I how would I write out the genotype and phenotype for a X link recessive gene when after the punnett square the two females are not effect and the two males are effected?

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by greenchicken
Wed Mar 18, 2015 8:57 pm
 
Forum: Genetics
Topic: genotype ratio and phenotype ratio in X linked allege
Replies: 0
Views: 69

genotypic ratio and phenotypic ratio

Ok what would the genotype ratio and phenotype ratio be in the problem below RT Rt rT rt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt Rt RRTt RRtt RrTt Rrtt R round r wrinkled T tall t short

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by greenchicken
Wed Mar 18, 2015 8:53 pm
 
Forum: Genetics
Topic: genotypic ratio and phenotypic ratio
Replies: 0
Views: 42

Re: Why is ATP rather than GTP, CTP or TTP the energy currency?

... expect similar thermodynamic properties, and I can see how that links to similar ΔG°' values. However, actual ΔG in the cell will depend on the ratio of tri- and di-phosphorylated forms. Surely the only reason hydrolysis of ATP releases free energy is because the reaction is far from equilibrium ...

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by Maus
Tue Feb 03, 2015 6:46 pm
 
Forum: Molecular Biology
Topic: Why is ATP rather than GTP, CTP or TTP the energy currency?
Replies: 6
Views: 9553

Mendel's Law

Having issues with determining the ratio. Describe the phenotypic and genotypic ratios for the F2 generation if pea plants with restricted yellow pods are crossed with true-breeding inflated green pods in the original cross and then the F1 ...

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by curlzz07
Sat Oct 04, 2014 2:28 pm
 
Forum: Genetics
Topic: Mendel's Law
Replies: 2
Views: 2439

Re: Any ideas for vaccine development or anti-viral drugs???

... and AVI-7539) or AVI-6003 (a combination of AVI-7287 and AVI-7288) were administered as sequential intravenous (IV) infusions of a 1:1 fixed dose ratio of the two subcomponents. In each study, 30 healthy male and female subjects between 18 and 50 years of age were enrolled in 6 dose escalation ...

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by jonmoulton
Mon Sep 15, 2014 3:04 pm
 
Forum: Cell Biology
Topic: Any ideas for vaccine development or anti-viral drugs???
Replies: 2
Views: 12591
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