In a rare southern lizard species, individuals with (aa) genotype do not live to a reproductive age. the gene pool of the lizard population is affected because this allele (a).

a. favours migration
b. produces new gene combinations
c. increases genetic diversity
d. decreases in frequency

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one