the heart has valves in place to prevent the backflow of blood.
Answer:
It will start growing.
Explanation:
If we cut the top off a pineapple and replant it in the soil or a liquid solution so it will start growing because at the top of pineapple fruit, the vegetative parts such as leaves, stem and buds which bear roots are present so if we cut the top of a pineapple and placed it a soil, it will start growing due to the presence of vegetative parts that is required by the plant for their regrowth.
Cytoplasm is all material (organelles, enzymes, fluid) inside of the cell membrane, except for the nucleus, which has it's own membrane and nucleoplasm within.
First, crossing-over and the subsequent rearrangement of alleles on homologous chromosomes leads to gametes with a new mix of genetic material. Second, when the gametes fuse, new combinations of alleles result.
