Which of the following statements about human somatic cells is not true? Select one:
a. They contain 23 pairs of chromosomes.
b. They are haploid.
c. They reproduce by mitosis.
d. They are more complex than bacterial cells.

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

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

What is the key to the recognition of codominance?