Biology sem1
2.1.4 quiz: chemical reactions and bonding
question 2 of 10
2 points
what causes an ionic bond?
a. a positive ion is attracted to a positive ion.
b. two atoms share electrons.
c. a positive ion is attracted to a negative ion.
d. two ions share electrons.

Which characteristics are typical of a human population in the postindustrial stage?

Bio molecules are essential to all living things. which biomolecule is “d” from the table

Transposon can cause mutations in genes at or near the site of transposon insertion. it is possible for these elements to transpose away from their original site, causing a reversion of the mutant phenotype. in some cases, however, even more severe phenotypes appear when these elements excise from this site, due to events at or near the mutant allele. what might be happening to the transposon or the nearby gene to create more severe mutations?