Before cell reproduction or mitosis can proceed, what is the correct sequence of steps that must first occur?
a) chromosome replication, chromosome checking and repair, growth
b) growth of cytoplasm, duplication of cellular organelles, chromosome replication
c) replication of chromosomes, growth, duplication of cellular contents and organelles
d) growth, chromosome replication, repair of chromosomal errors, duplication of cell organelles,

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)

Which statement describes john tuzo wilson’s contribution to the theory of plate tectonics?

In a cladogram' when does a group of organisms branch off