Jan drew a diagram to compare centipedes and millipedes. Which belongs in the area labeled Y? are active predators
have two pairs of legs on each segment
use specialized mouthparts to attach to hosts
use claws to inject venom

Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%

People with one sickle cell allele are not likely to get malaria. what is this an example of?