Chromosomes

The ................. contain genes that will determine the sex of the individual.

Humans with more than two copies of a chromosome, a condition called ..............

.................., also called X, is a condition in which there is a missing X chromosome in females.

The genes that cause a fertilized egg to develop into a ........are located on the Y chromosome.

Changes in an organism’s chromosome structure are called ...........

.........It is a photo of the chromosomes in a dividing cell that shows the chromosomes arranged by size.

.............., also called trisomy 21, is a condition in which there is an extra copy of chromosome 21.

............are chromosomes that are not directly involved in determining the sex of an individual.

any individual without a Y chromosome is .............

When sperms and egg cells form, each chromosome and its homologue separate, an event called ...............