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Chapter Practice Test

This activity contains 14 questions.

Question 1
1 When the two alleles controlling a trait are different, the individual is __________ for the trait.
End of Question 1

Question 2
2 An allele that is able to mask the expression of its partner allele is said to be __________.
End of Question 2

Question 3
3 A person's genetic makeup is referred to as his or her genotype.
End of Question 3

Question 4
4 An organism with five pairs of homologous chromosomes could produce __________ different gametes on the basis of independent assortment alone.
End of Question 4

Question 5
5 The larger the number of offspring, the greater the likelihood that the ratios predicted by a Punnett square will conform to the predicted values.
End of Question 5

Question 6
6 Many genetic disorders, such as albinism, cystic fibrosis, and Tay-Sachs disease, are inherited as simple recessive traits.
End of Question 6

Question 7
7 Codominant alleles are present in __________.
End of Question 7

Question 8
8 The X and Y sex chromosomes are the best examples of homologous chromosomes.
End of Question 8

Question 9
9 Which of the following is not one of the three basic levels of gene control?
End of Question 9

Question 10
10 Amniocentesis and chorionic villus sampling are both examples of a category of genetic screening called __________.
End of Question 10

Question 11
11 How many chromosomes are in a normal haploid human cell?
End of Question 11

Question 12
12 Linked genes __________.
End of Question 12

Question 13
13 Use the following information to solve the problem using a Punnett square: Assume that the dominant "B" allele encodes brown eyes and the recessive "b" allele encodes blue eyes. An individual with the genotype bb has children with an individual of the genotype Bb. What is the percent chance that they would have children with blue eyes?
End of Question 13

Question 14
14 Red-green color blindness exhibits __________ inheritance.
End of Question 14

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