HELP, ITS A BRAINPOP QUESTION ABOUT GENETICS How do mutations affect natural selection?

A. They slow down the process

B. They prevent organisms from evolving

C. They affect how likely an organism is to survive and reproduce

D. They are the leading cause of extinction

Which statement best describes the relationship between an allele and a gene? question 1 options: an allele is a variation of a gene that can be expressed as a phenotype. an allele is the part of a gene that attaches to messenger rna molecules. an allele is a segment of a dna molecule that controls replication of a gene.

How many chromosomes are in a gold fish?

What percentage of light hits earth's surface directly?