Cystic fibrosis (cf) is caused by a recessive allele. a couple who do not have cf have a child that has cf. what is the probability that if they have another child, that the child will be heterozygous for cf?

What drives an advertising campaign?

Babies with very low or very high birth weight are less likely to survive. observe a graph of the data.

Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus a) the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change. b) natural selection, gene flow, and genetic drift are acting equally to change an allele's frequency. c) this means that, at this locus, two alleles are present in equal proportions. d) the population itself is not evolving, but individuals within the population may be evolving.