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Genetics Quiz: Part 1
Test Description: Review Mendel's Laws and how to complete Punnet Squares
Instructions: Answer all questions to get your test result.
1) Why is Gregor Mendel important in Biology?
A
he discovered the effects of gravity
B
he wrote many textbooks used in high school
C
he discovered the structure of the DNA molecule
D
he discovered the role of dominant and recessive alleles in the inheritance of pea plants
2) Mendel crossed a heterozygous red flowered plant (Rr) with a homozygous white flowered plant (rr). What percentage of the offspring will have white flowers?
A
100%
B
50%
C
30%
D
0%
3) Mendel crossed a homozygous red flowered plant (RR) with a homozygous white flowered plant (rr). What percentage of the offspring had white flowers?
A
50%
B
0%
C
100%
D
30%
4) Mendel's first law, the law of segregation, states that only one allele can be represented in a gamete. What process makes sure that gametes only have one allele for a gene?
A
Osmosis
B
Meiosis
C
Mitosis
D
DNA Replication
5) Mendel crossed two heterozygous red flowered plants (Rr). What percentage of the offspring will have red flowers?
A
100%
B
0 %
C
75%
D
50%
6) Mendel's second law states that alleles of different genes separate randomly. In which PHASE of meiosis do homologous chromosomes line up randomly in the middle of the cell?
A
Prophase II
B
Metaphase I
C
Metaphase II
D
Prophase I
7) What do punnet squares show?
A
The possible DNA sequence for offspring
B
The formation of gametes
C
A physical picture of the organism
D
The possible genotypes of offspring
8) Mendel crossed two homozygous red flowered plants (RR). What percentage of the offspring will have red flowers?
A
50%
B
100%
C
0%
D
75%
9) In genetic crosses, there are always an equal number of phenotypes and genotypes.
A
Sometime True
B
Not enough information to answer this question
C
True
D
False
10) Ms. Larson has blue eyes, a recessive trait (bb). Which of the following could be the genotypes of Ms. Larson's parents?
A
BB x BB
B
BB x bb
C
Bb x bb
D
BB x Bb
*select an answer for all questions
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