Pigeons learn to flap their wings to avoid shock easily than they learn to peck a disk to avoid shock. they learn to flap their wings to obtain food easily than they learn to peck a disk to obtain food.

1. key concept list themajor biomes, and give onecharacteristic feature of each.

Because of its structure the cell membrane is known as a phospholipid ? a.bilayer b.molecule c.fluid d.barrier

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.