Answer:
true
Explanation:
a virus needs a host to replicate its like fleas they lay eggs on dogs to replicate
Natural selection act directly upon <u>Alleles</u>
Explanation:
Genes, such as that of fur color, have many variants called alleles. Natural selection act on the alleles and chooses the best fit for an environment and eliminates the disadvantageous ones from the population over generations. Mutations are a rare occurrence that increases the number of allelic variants of a genes on which natural selection can act upon.
Blue-green algae aka Cyanobacteria
Answer:
Prophase
Explanation:
the condensing and coiling of DNA into chromosomes. The step that takes up 60% of the time that the cell is undergoing mitosis.
