How often two genes cross-over can tell us how far apart the genes are from each other. This is called recombinant frequency (rf). These calculations allow us to create a gene map like this one. Circle in red the two genes that are closest together. Underline in green the pair of genes that are furthest apart. Genes that are closer together on the chromosome are more likely to be inherited together. Put a blue X through the gene that is most likely to be inherited with vestigial wings.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca

Are gametes exactly the same? explain why or why not?

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.