A cross between two organisms heterozygous for two different genes (AaBb) likely results in a 9 : 3 : 3 : 1 phenotype ratio among the offspring. Is the offspring’s genotype ratio the same? Explain your answer

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.

Spring tides, when the high tides are at their highest and low tides at their lowest. what is it about these positions that causes these high and low tides?

The carrier molecules of the electron transport system are located in the