Genetic diagrams and pedigree analysis

1

What is a gamete?

2

How many chromosomes are found in human body cells?

3

Which statement about chromosomes and human gender is correct?

4

What are the different forms of a gene called?

5

Why does a person need to have two copies of the cystic fibrosis allele to have cystic fibrosis?

6

In a genetic diagram, how is a dominant allele shown?

7

Which of these represents someone who is heterozygous for a certain gene?

8

Polydactyly is an inherited condition, due to a dominant allele, causing extra fingers or toes. What is the chance of a child having polydactyly if their parents are Pp and pp?

9

Feather colour in hens can be white (WW), black (BB) or speckled (BW). What does this tell you?

10

What is a phenotype?