Probability and Heredity
1. A number that describes how likely it is that an event will occur is called _______________.
2. What is the probability that a lost coin will hand heads up?
3. Is probability a definite prediction? For instance, if I toss a coin 10 times, will I automatically get
5 heads and 5 tails?
4. If I toss a coin five times, and it lands heads up each time, can you expect the coin to land heads
up on the 6th toss?
5. When Mendel crossed two hybrid plants for stem height (Tt), what results did he always get?
6. Mendel realized that the principals of probability could be used to _____________ the results of
genetic crosses.
7. A chart that shows all the possible combinations of alleles that can result from a genetic cross is
called a (n) ____________________.
8. If I cross two tall pea plants, and I get 3 tall and 1 short offspring, what are the alleles of my
parent plants?
9. ___________________ describes an organism with two identical alleles for a trait.
10. ___________________ describes an organism’s physical appearance, or visible traits.
11. _________________ is an organism’s genetic makeup or allele combinations.
12. ______________________ describes an organism that has two different alleles for a trait.
13. Mendel used the term _________ to describe heterozygous pea plants.
14. In cattle, red hair and white hair are codominant. Cattle born with white and red hair are
___________________________.