Equations Flashcards

1
Q

 Hamilton’s rule

 Hardy Weinburg equation

 Genetic distance

A

– rb > c
- (r=relatedness, b=benefit to recipient, c=cost of altruism
on performer)

  • p2 + 2pq + q2 = 1
  • =recombination frequency (RF)
    RF = (no. of recombinant progeny/total no. of progeny) x 100
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2
Q

 Genetic vs environmental

 Heritability

A

– Vp (Vt) = Vg + Ve
(Vp = total phenotypic variance Vg = genetic variance
Ve = environmental variance)

  • H2 (broad sense) = Vg/ Vp
  • h2 (narrow sense) = Va/ Vp

(Va = additive variance)

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3
Q

Genetic ratios;

Mendal monohybrid cross

Mendal dihybrid cross

Lethal alleles

A

– 3:1 dominant:recessive

– 9:3:3:1

  • Not 3:1 as expected, 2:1 instead (monohybrid cross)
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4
Q

Reccesive epistasis

Dominant epistasis

A
  • Not 9:3:3:1 as expected, 9:4:3 instead (dihybrid cross)

- Not 9:3:3:1 as expected, 12:3:1 instead (dihybrid cross)

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