Which of the following is true of a cell without tRNA? - The cell will be lacking ribosomes
-The code of DNA cannot be transferred to the ribosomes
-mRNA cannot be created at the ribosomes
Amino acids will not be delivered to the ribosomes

Which of the following statements is true about the relationship between genetic variation and natural selection? a. genetic variation must be present in a population before natural selection can act on it. b. genetic variation arises in a population as a result of natural selection. c. natural selection can act on a population whether there is genetic variation within the population or not. d. after natural selection acts on a population, the amount of genetic variation in the population always increases.

What does it mean for an allele to be dominant?

Hairs that clean dirt out of the air in your nasal passages are called: a. sinus b. trachea c. cilia d. mucus