If chromosomes fail to separate during cell division can occur. This can result in cells with the incorrect number of chromosomes which is termed . Cells with one extra chromosome are called while cells missing one chromosome are called . A person with Down’s syndrome has
Copies of chromosome .

What evidence did mendel find that supported his law of independent assortment? a. dominant traits are expressed when there is a dominant allele. b. traits do not affect the inheritance of other traits. c. some traits have three or four different alleles. d. plants and animals can both reproduce sexually.

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

Witch type of microscope is used to view very small cell components like proteins and dna?