D). Carcinogens are chemical factors in an organism's environment that can cause spontaneous mutation.
Answer:
3/16 is your answer.
Explanation:
Hope this helps. Good luck!
Answer:
Genes.
Explanation:
Genes are present on DNA that are inherited from parents to their offspring. Genes may be defined as the segment of DNA that ultimately form a particular protein product.
The particular trait of an organism is determined by the specific combination of the inherited genes. The genes are nearly same in all the human beings and there mutation can cause observable phenotype traits.
Thus, the correct answer is option (2).
Valves ensure blood flows toward your heart. Vein valves work to bring the blood that flowed down via arteries back up to your heart.
Direct characterizaation is what the author says about the character.
So B would be correct
