Select three ways a virus can enter a cell.
a. the virus dissolves the cell membrane and then exits the cell.
b. the virus remains inside but injects dna or rna out the cell.
c. the virus remains outside but injects dna or rna into the cell.
d. the virus dissolves the cell membrane and then enters the cell.
e. projections on a virus match receptor sites on a cell membrane.
f. projections on a virus do not match receptor sites on a cell membrane.

Considering the yellow and green pea color phenotypes studied by gregor mendel: a. what is the biochemical function of the protein that is specified by the gene responsible for the pea color phenotype? (1 point) b. a null allele of a gene is an allele that does not specify (or encode) any of the biochemical function that the gene normally provides (in other words, either no protein at all or only non-functional protein is produced from it). of the two alleles, y and y, which is more likely to be a null allele? (1 point) c. in terms of the underlying biochemistry, why is the y allele dominant to the y allele? (2 points) d. why are peas that are yy homozygotes green? (1 point) e. the amount of protein produced from a gene is roughly proportional to the number of functional copies of the gene carried by a cell or individual. what do the phenotypes of yy homozygotes, yy heterozygotes, and yy homozygotes tell us about the amount of sgr enzyme needed to produce a yellow color? explain your reasoning. (2 points)

Do you think the gene eef1 alpha1 supports cell theory? explain your response.

What are the 3 types of artificial cloning