Chapter 8:
Heredity
Practice Test
1.
Mendel crossed two purebred pea plants, one with white flowers and one with purple flowers. What color flowers did the offspring (the first filial generation, F1) have?
a.
pale purple
b.
pink
c.
white
d.
purple
Hint
2.
What do scientists call the different forms that a gene can take?
a.
factors
b.
traits
c.
alleles
d.
alternatives
Hint
3.
Mendel reasoned that each trait must be determined by a pair of factors, one from each parent. What do we call the factors Mendel identified?
a.
generations
b.
characters
c.
traits
d.
genes
Hint
4.
When an organism has two of the same alleles for a given trait, it is said to be ___________ for that trait.
a.
heterozygous
b.
recessive
c.
dominant
d.
homozygous
Hint
5.
Mendel determined that the purple color in pea plants is dominant and the white color is recessive. What did Mendel determine the ratio of purple to white flowers should be in the F2 generation?
a.
2 to 4
b.
1 to 3
c.
3 to 1
d.
2 to 2
Hint
6.
What are traits that seem to be connected to the sex of an organism?
a.
modified traits
b.
sex-linked traits
c.
codominant traits
d.
continuous traits
Hint
7.
What are genes that are inherited along with other genes that affect the expression of those genes?
a.
modifier genes
b.
codominant genes
c.
recessive genes
d.
sex-linked traits
Hint
8.
What is the form of a trait that is hidden in the F1 generation, but appears in the F2 generation?
a.
recessive trait
b.
controlling trait
c.
dominant trait
d.
quiet trait
Hint
9.
Mendel allowed members of the first filial generation of pea plants to cross-pollinate. What color(s) did the second generation (F2) have?
a.
white only
b.
pale purple
c.
purple only
d.
purple and white
Hint
10.
What is the appearance of a trait as determined by a given genotype?
a.
Punnett type
b.
Mendelian type
c.
apparent type
d.
phenotype
Hint
