Mutations are the source of all new alleles. An allele is a variant form of a gene. Variations in alleles lead to variations in organisms. Positive mutations give an organism a better chance of survival. It means that the mutation may be passed on to the offspring. Negative mutations may lead to an early death.<span> Therefore, changes in alleles from one generation to another form the basis of evolution.</span>
Answer: A
Explanation:
Exponential growth simply means a rapid increase in size and a constant growing rate
"Skeletal muscle, also called voluntary muscle, in vertebrates, most common of the three types of muscle in the body. Skeletal muscles are attached to bones by tendons, and they produce all the movements of body parts in relation to each other. Unlike smooth muscle and cardiac muscle, skeletal muscle is under voluntary control. Similar to cardiac muscle, however, skeletal muscle is striated; its long, thin, multinucleated fibres are crossed with a regular pattern of fine red and white lines, giving the muscle a distinctive appearance. Skeletal muscle fibres are bound together by connective tissue and communicate with nerves and blood vessels."
Britannica, The Editors of Encyclopaedia. "Skeletal muscle". Encyclopedia Britannica, 5 Jan. 2018, https://www.britannica.com/science/skeletal-muscle. Accessed 24 May 2021.
Explanation:
I am currently taking biology and the Britannica website has most definitely proven to be a reliable source!
