Historically, african elephants have had large ivory tusks. for many years, poachers (illegal hunters) have been killing elephants that have large tusks so they could sell the ivory, which is valuable. now, many african elephants have small tusks or do not develop tusks. which of the following is true?
a. the trait of tusk size in elephants has changed over time.
b. poaching has had no effect on the size of elephant tusks.
c. elephants without tusks are more likely to be hunted than elephants with large tusks.
d. elephants without tusks cannot reproduce.

Ais a group of individuals of the same that exist together in the same place at the same time

When mendel crossed a true-breeding short plant with a true-breeding tall plant all the offspring were tall. which term describes the gene for tallnes?

The empty trna moves off and picks up another matching amino acid from the cytoplasm in the cell. the anticodon of the trna, with its attached amino acid, pairs to the codon of the mrna, which is attached to a ribosome. this sequence is repeated until the ribosome reaches a stop codon on the mrna, which signals the end of protein synthesis. the ribosome forms a peptide bond between the amino acids, and an amino acid chain begins to form. when a second trna with its specific amino acid pairs to the next codon in sequence, the attached amino acid breaks from the first trna and is bonded to the amino acid of the second trna.