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:
Q9 is Elliptical and Q10 is sideways i think. Im not sure. Sorry if its not correct.
Explanation:
The answer is c)movement of material within earth’s core
<span> Inside its enclosed nuclear membrane, it contains the majority of the cell's genetic material which this material is organized as DNA molecules, along with a variety of proteins, to form chromosomes.</span>