Earth is tilted 23.5° on its rotational axis. this tilt affects the amount of direct sunlight received by earth’s hemispheres throughout the year. during summer in the northern hemisphere, which of the following descriptions correctly identifies the amount of sunlight received in the arctic (the northernmost part of earth)?

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.