Answer:
Variables are parameters that are monitored and controlled or affected by the feedback system
Explanation:
The correct answer is <span>a. fibrous carcinogen. </span>
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.
Answer:
3rd option
Explanation:
Eukaryotic cells have many chromosomes while most prokaryotic cells consist of just one circular chromosome.
