Describes why similar organisms do not interbreed because of a physical barrier.

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

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

Bio molecules are essential to all living things. which biomolecule is “d” from the table