Answer:
they help lower the activation energy of chemical reactions
Natural selection refers to the phenomenon by which the species in a population possessing the tendency to get adapted in a condition enhance in numbers in comparison to those who exhibit fewer adaptation capacities over a number of generations.
In other words, it can be stated as the non-random and differential development of distinct genotypes function to sustain favorable variant and to eradicate less favorable variants. Some of the conditions are required for the process of natural selection to take place.
These are heredity, reproduction, variation in individual characters, and variation in the fitness of organisms among the members of the population. If the conditions are met, then the phenomenon of natural selection occurs by default.
The process starts when DNA is wrapped around special protein molecules called histones<span>. The combined loop of DNA and protein is called a </span>nucleosome. Next the nucleosomes<span> are packaged into a thread, which is sometimes described as "beads on a string". The end result is a fiber known as </span>chromatin<span>.</span>
C is probably the best answer choice: <span>Were soft bodied and tiny, therefore unlikely to fossilize.</span>
Answer:
Option a. is correct
Explanation:
A mutation refers to a change in our DNA sequence which causes it to break down. It occurs due to the following reasons:
1. Due to mistakes when the DNA is copied
2. Due to environmental factors such as UV light, smoking.
3. Exposure to specific chemicals or radiation
The mechanism for reactive oxygen species to cause mutation is that bases are oxidized to a variety of different products which might pair with a different base than the original base would have.
