Answer:
D
Explanation:
Clams naturally filter out contaminants in water
Without the clams, the water quality will drop dramatically, as the local ecosystem will lose its natural filtration system
Answer:
The wings of the wasp have high in length due to the presence of dominant gene.
Explanation:
There are two genes present in wasp which indicates the length of the wing. The recessive gene represents short wing while dominant gene represent high length. So the offspring which is produced from the mating of male and female wasp produces offspring having high length of wings. It is because in the offspring only dominant gene expressed while the recessive gene remain hidden.
Answer:
b. Replicated chromosomes line up on the equatorial plate.
Explanation:
Mitosis starts with the breakdown of the nuclear envelop and condensation of chromatids into visible chromosomes. Since DNA replication has occurred during the S-phase of interphase, each chromosome has two sister chromatids held together by a centromere. A chromosome with two sister chromatids is said to be a replicated chromosome.
Metaphase of mitosis includes the alignment of replicated chromosomes at the cell's equator. The process is assisted by the spindle apparatus. This is followed by splitting of centromere and separation of sister chromatids during anaphase.
