1.
Gregor Mendel experimented with hundreds of pea plants to understand the process of ________________________.
2.
In a flower, the female sex cells, or eggs, are produced by the________________________.
3.
Pollen, which contains the male sex cells, is produced by the
________________________.
4.
A dominant allele is represented by a(n) ________________________ letter.
5.
A number that describes how likely it is that a certain event will occur is called
________________________.
6.
Mendel realized that the principles of probability could be used to
________________________ the results of genetic crosses.
7.
A recessive allele is represented by a(n) ________________________ letter.
8.
A chart that shows all the possible combinations of alleles that can result from a genetic cross is called a(n) ________________________.
9.
In a genetic cross, the ________________________ that each parent passes to its offspring is based on ________________________.
10.
In cattle, red hair and white hair are codominant. Cattle with both white hair and red hair are ________________________.
11.
Mendel used the term ________________________ to describe heterozygous pea plants.
12.
heredity
13.
traits
14.
genetics
15.
purebred short
16.
hybrid tall
17.
alleles
18.
recessive allele
19.
purebred tall
20.
genes
21.
dominant allele
22.
phenotype
23.
heterozygous
24.
genotype
25.
homozygous
26.
codominance
27.
punnet square
28.
probability
___ Describes an organism that has two different alleles for a trait
___ An organism’s physical appearance, or visible traits
___ A number that describes how likely it is that an event will occur
___Inheritance pattern in which the alleles are neither dominant nor recessive

___ Describes an organism with two identical alleles for a trait
___ The scientific study of heredity
___ The passing of traits from parents to offspring
___ An allele whose trait always shows up in the organism
___ Physical characteristics
___ Two alleles for tall stems
___ One allele for tall stems and one allele for short stems
___Factors that control traits
___ An organism’s genetic makeup, or allele combinations
___ Two alleles for short stems
___ Describes an organism that has two different alleles for a trait
___A chart that shows all possible combinations of alleles that can result from genetic cross
___ An allele whose trait is masked in the presence of a dominant allele
29.
Complete the two Punnett squares bellow:
30.
In the cross between two black guinea pigs shown in Punnet Square A, what is the probability that an offspring will be black? White?
31.
Which guinea pig parent(s) in Punnett Square B is homozygous? Which is heterozugous?
32.
In codominance, the alleles are neither dominant nor recessive.
33.
When you toss a coin 20 times, you will always get 10 heads and 10 tails.
34.
Only pea plants that have two recessive alleles for short stems will be short.
35.
Some scientists during Mendel's time thought Mendel should be called the Father of
Genetics.