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- 1. Multiple Choice
Which of he following generations is produced by the cross of the F1 generation with itself?
F1 generation
F2 generation
P generation
X generation
- 2. Fill in the Blank
In a dihybrid cross, the two sets of ______________ being studied are located on separate chromosomes, so the traits themselves are unrelated.
- 3. Multiple Choice
If someone were to perform a trihybrid cross, or a cross where three genes re studied at the sane time, how many cells would be needed in the Punnett square?
64
32
16
128
- 4. Fill in the Blank
A ________ trait is expressed even if the individual has only one copy of the allele.
- 5. Multiple Choice
How many different phenotypes are possible for a dihybrid cross between two pea plants that are both homozygous recessive for pea shape and heterozygous for color?
4
2
1
3
- 6. Multiple Choice
For many years, Gregor Mendel studied how characteristics are transmitted from parents to offspring, which is the study of genetic ________________.
experience
independence
competence
inheritance
- 7. Multiple Choice
When is a recessive gene expressed in the phenotype?
when there are two different alleles of a gene
when there are two identical alleles of a gene
only in the absence of a dominant allele
only in the absence of a recessive allele
- 8. Multiple Choice
What is the expected typical ratio for a dihybrid cross involving parents heterozygous for both traits?
6:2:2:6
0:8:8:0
9:3:3:1
4:4:4:4
- 9. Multiple Choice
How many different genotypes are possible for a dihybrid cross between a parent that is homozygous dominant for both traits and a parent that is heterozygous for both traits?
8
2
4
6
- 10. Multiple Choice
A tomato plant has a genotype Wwgg. Select all possible genetic combinations that could be present in a single grain of pollen from this plant.
wg
WwGg
Wg
WG
wwgg
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