During sexual reproduction, each parent contributes A
a double helix of chromosomes.
B
one strand of chromosomes, or half of the new organism's DNA.
С
a dominant gene and a recessive gene.
D
multiple mutated cells.

Isolated volcanic peaks on the ocean floor are

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca