Which of the following statements best describes the structure, or makeup, of a codon? (A) A codon codon is is a a three-three-letter letter nucleotide nucleotide sequence sequence found found on on the the tRNA. tRNA. A

(B) A codon codon is is a a growing growing polypeptide polypeptide chain. chain. A

(C) A codon codon is is a a gene gene sequence sequence found found on on the the DNA DNA strand. strand. A

(D) A codon codon is is a a three-three-letter letter nucleotide nucleotide sequence sequence found found on on the the mRNA. mRNA.

Biology 1c cumulative exam i need awsners

List two modern organisms that have pentameral symmetry

Ry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached? gene flow greatly affects small populations, but large populations can recover. genetic drift greatly affects small populations, but large populations can recover. gene flow greatly affects large populations, but small populations can recover. genetic drift greatly affects large populations, but small populations can recover.