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7 results for “genetics”

Formulae (7)

p^2 + 2pq + q^2 = 1

Genotype frequencies in a non-evolving population.

p + q = 1

The two allele frequencies must total 1.

\%GC = \frac{G + C}{A + T + G + C} \times 100

Proportion of G and C bases in DNA.

3 : 1

Phenotype ratio from a heterozygous monohybrid cross.

9 : 3 : 3 : 1

Phenotype ratio from a dihybrid cross.

RF = \frac{\text{recombinants}}{\text{total offspring}} \times 100

Genetic map distance in centimorgans.

p + q = 1

Frequencies of two alleles sum to one.