This is the normal nucleotide sequence on a dna strand: a-c-t-g-g-a-t. what is an insertion?

a: a-c-t-g-c-g-a-t
b: a-c-t-g-a-t
c: a-g-t-g-g-a-t
d: a-c-t-g-g-a-u

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Aparent with freckles is crossed with a parent without freckles. the punnett square shows the possible genotypes and phenotypes of the offspring. which statement accurately describes the probability of phenotypes? a. the offspring are more likely to have freckles. b. the offspring are more likely to have no freckles. c. the likelihood of the offspring having freckles and not having freckles is the same. d. the likelihood of the offspring having freckles and not having freckles cannot be determined.

There are multiple lines of evidence that provide support for common ancestry and evolution. write 3-4 paragraphs describing at least three of them in detail. provide at least one example for each line of evidence.