Practice Test Answers

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Joyce and Tim started piano lessons at the same time. They both practice about 30 minutes a day and enjoy playing the piano. Despite these similarities, Joyce has mastered many more piano skills than Tim has. Which argument is best supported by these observations?

A
The amount an individual practices each day entirely determines how well they play piano.
B
The ability to play the piano is influenced by genetics as well as the environment.
C
All individuals inherit the same potential to play the piano.
D
Most people only need 30 minutes of piano practice each day to master skills.
3

If Mendel had crossed a true breeding dominant plant with a true breeding recessive plant, in which of the three generations is the recessive trait visible?

A
cap p generation only
B
cap p generation and cap f sub 2 generation
C
cap f sub 1 generation only
D
cap f sub 1 generation and cap f sub 2 generation
6

Svetlana and her mother are very similar. Both have blonde hair, a love of scrapbooking, blue eyes, and a thin nose. Which statement most likely describes Svetlana’s traits?

A
Svetlana inherited her blonde hair from her mother, but her thin nose comes from her environment.
B
Svetlana inherited her blue eyes from her mother, but her love of scrapbooking comes from her environment.
C
Svetlana inherited her thin nose from her mother, but her blonde hair comes from her environment.
D
Svetlana inherited her love of scrapbooking from her mother, but her blue eyes come from her environment.
7

The Punnett square predicts the ratio of genotypes in the offspring based on the genotypes of the parents. Which Punnett square represents a cross between a mom who is heterozygous for dimples and a dad who is homozygous for no dimples?

A
Image with description Square divided into four equal sections forming a 2 by 2 grid. Columns labeled uppercase D and lowercase d. Rows labeled lowercase d and lowercase d. Top row: uppercase D lowercase d, lowercase d lowercase d. Bottom row: uppercase D lowercase d, lowercase d lowercase d.
B
Image with description Square divided into four equal sections forming a 2 by 2 grid. Columns labeled uppercase D and uppercase D. Rows labeled lowercase d and lowercase d. Top row: uppercase D lowercase d, uppercase D lowercase d. Bottom row: uppercase D lowercase d, uppercase D lowercase d.
C
Image with description Square divided into four equal sections forming a 2 by 2 grid. Columns labeled uppercase D and lowercase d. Rows labeled uppercase D and lowercase d. Top row: uppercase D uppercase D, uppercase D lowercase d. Bottom row: uppercase D lowercase d, lowercase d lowercase d.
D
Image with description Square divided into four equal sections forming a 2 by 2 grid. Columns labeled uppercase D and uppercase D. Rows labeled uppercase D and uppercase D. Top row: uppercase D uppercase D, uppercase D uppercase D. Bottom row: uppercase D uppercase D, uppercase D uppercase D.
8

Mendel’s pea plants had either purple or white flowers. This means that the plants

A
have two recessive traits.
B
have two copies of a gene from one parent.
C
can self-pollinate.
D
have two alleles for the gene.
9

Which process is the opposite of inbreeding?

A
genetic engineering
B
hybridization
C
seed production
D
pollination
11

Which are different forms of the same gene?

A
alleles
B
traits
C
genotypes
D
phenotypes
12

Which scenario breaks the law of segregation?

A
the gametes produced each have 1 allele after meiosis II
B
a gamete produced has 2 of the same alleles after meiosis II
C
the gamete fertilized has the dominant trait
D
a gamete contains the father’s allele
13

Who has hemophilia in the pedigree that is shown?

A
John, Charles, Jack, and Irene
B
Ann and Marie
C
John and Ann
D
Fred and Luke

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