The physical appearance of an organism based on its traits

This is the combination of alleles an organism has for a particular trait.

An organism with two different alleles for a trait is called

A segment of DNA that codes for a trait

The observable expression of a trait

This type of allele is expressed whether there are one or two copies present.

These types of alleles are usually only expressed if the organism has two copies

An organism with two of the same alleles for a trait is called

a picture of chromosomes grouped in ordered pairs is a ______________

A normal human zygote should have _____ chromosomes inside.

Which of the following would be considered a gamete cell?

An organism's reproductive cells, sperm and egg cells, are called _____.

Chromosome pairs 1-22 are referred to as

The 23rd pair of chromosomes that contain the genes to determine the sex of an individual are called ___________.

There are no carriers for Huntington's Disease - you either have it or you don't, and if you don't have it, you can't give it to your children either. It is equally common in men and women. What is the pattern of inheritance for Huntington's?

Cystic Fibrosis often appears in children born to two healthy (no cystic fibrosis) parents, and the trait can regularly skip generations, and it is equally common in boys and girls. What is the pattern of inheritance for Cystic Fibrosis?