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ANSC*6370 QG and Animal Models
Fall 03 - Quiz 2

1.

If $\sigma^{2}_{A} = 0.6$ and $\sigma^{2}_{D}=0.4$, then determine the following quantities:

(a)

Total genetic variance.

(b)

Covariance between parent and offspring.

(c)

Covariance between half-sibs.

(d)

Covariance between full-sibs.

2.

If N=5, q_o=0.3, and $\sigma^{2}_{q_{t}} = p_{o}q_{o}[1 - (1- \frac{1}{2N})^{t}]$, then

(a)

what would be $\sigma^{2}_{q_{t}}$ after 10 generations of random matings in the small population?

(b)

what would be the level of inbreeding in the small population after 10 generations of random matings?