More cards in this set

Many characteristics are caused by...

How many chromosomes does a nucleus contain? How many chromosomes does a gamete contain?

What are alleles?

How many alleles for each gene does a person usually have?

What do homozygous and hetrozygous mean?

How is variation produced in offspring?

Why do offspring have similarities with both of their parents?

Why are two (or more) offspring from the same parents genetically different?

What are dominant and recessive alleles?

Which sex chromosomes do males have? Which do females have?