Darwin visited the galapagos islands while on a journey aboard the beagle. which observation led darwin to start thinking about evolution?

a)the animals on the galapagos islands were recognizable as similar to their counterparts in other regions of world, but had a range of noticeable differences from those counterparts. many animals also had small variations from island to island.
b)the animals on the galapagos islands were recognizable as similar to their counterparts in other regions of world, but were smaller than those counterparts. many animals also had small variations from island to island.

c) the animals on the galapagos islands were recognizable as similar to their counterparts in other regions of world, but were larger than those counterparts. many animals also had small variations from island to island.

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called

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)