1. What an organism looks like is called its .

2. We can study inheritance on a family tree.

    True

    False

3. What is another word for "true breeding"?

4. If 2 heterozygous pea plants are crossed, what are the chances of there being recessive offspring?

    none

    1 in 2

    1 in 4

    all

5. What do we call a fertilised egg cell?

6. If a characteristic is masked by another characteristic, it is said to be .

7. A gamete contains a double set of chromosomes.

    True

    False

8. What word do we use to describe different forms of the same gene?

9. Which of the following genotypes would represent a human male?

    XX

    XY

    YY

10. How many pairs of chromosomes are found in a normal human cell?

    23

    46

    92

    0