Question 1

Thmost accuratdescription of an organiswith genotypAaBb is

Accepted Answer

A) homozygous dominant. 
B) heterozygous. 
C) heterozygous dominant. 
D) homozygous recessive. 
E) homozygous recessive

Question 2

Who proposethlaw of independent assortment?

Accepted Answer

A) Morgan. 
B) Mendel. 
C) Pasteur. 
D) Koch. 
E) Fleming.

Question 3

If R is dominant to r, thoffspring of thcross of RR with rr will

Accepted Answer

A) be homozygous. 
B) display the same phenotype as the RR parents. 
C) display the same phenotype as the rr parents. 
D) have the same genotype as the RR parents. 
E) have the same genotype as the rr parents.

Question 4

If a chilbelongs to blootypO, hor shcoulNOT havbeen produceby which set of parents?

Accepted Answer

A) type A mother and type B father 
B) type A mother and type O father 
C) type AB mother and type O father 
D) type O mother and type O father 
E) none of these

Question 5

If onparent has typA blooanthother parent has typB, then which of thfollowing is possiblin thchildren?

Accepted Answer

A) AB only. 
B) A and AB. 
C) B and AB. 
D) A, B, AB, and O. 
E) O only.

Question 6

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava normal child?

Accepted Answer

A) 0 percent 
B) 25 percent 
C) 50 percent 
D) 75 percent 
E) 100 percent

Question 7

Four of thfivanswers listebelow arcauseby recessivgenes.Select thEXCEPTION.

Accepted Answer

A) Huntington's disorder. 
B) phenylketonuria. 
C) color blindness. 
D) hemophilia 
E) albinism

Question 8

Which organisdiMendel usto work out thlaws of segregation anindependent assortment?

Accepted Answer

A) the fruit fly 
B) Neurospora crassa 
C) the garden pea 
D) E.coli. 
E) the garden roses

Question 9

Genes that arlocateon thsamchromosome

Accepted Answer

A) tend to be inherited together. 
B) will appear together in the gamete. 
C) are said to be linked. 
D) may be separated during chromosome pairing and crossing over. 
E) fit all of these characteristics.

Question 10

In cystic fibrosis patients,

Accepted Answer

A) chlorine ions are stuck inside epithelial cells. 
B) water is excessively abundant on surfaces of epithelia. 
C) surfaces of epithelia are relatively dry. 
D) chlorine ions are stuck inside epithelial cells, and water is excessively abundant on surfaces of epithelia. 
E) chlorine ions are stuck inside epithelial cells, and surfaces of epithelia are relatively dry.

Question 11

Thfailurof chromosomes to separatduring mitosis or meiosis is called

Accepted Answer

A) genetic displacement. 
B) trisomy. 
C) crossing over. 
D) nondisjunction. 
E) disjunction.

Question 12

In average, cystic fibrosis patients live

Accepted Answer

A) about 10 years. 
B) about 20 years. 
C) about 30 years. 
D) about 40 years. 
E) about 60 years.

Question 13

Which of thfollowing statements is truabout a normal CFTR protein?

Accepted Answer

A) CFTR protein pumps chlorine ions out of the cell. 
B) Activity of the CFTR protein causes the surface of epithelial cells to be constantly wet. 
C) CFTR protein serves as a receptor that signals the body to the presence of bacteria. 
D) CFTR protein allows the mucus to slide easily over epithelial cells. 
E) All of these are true.

Question 14

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava heterozygous child?

Accepted Answer

A) 0 percent 
B) 25 percent 
C) 50 percent 
D) 75 percent 
E) 100 percent

Question 15

If a gametis missing onchromosome,

Accepted Answer

A) the chromosome number is expressed as 2n-1. 
B) then one chromosome is without its homologue. 
C) the condition is called monosomy. 
D) only the chromosome number is expressed 2n-1, and the condition is called monosomy. 
E) the chromosome number is expressed 2n-1, one chromosome is without its homologue, and the condition is called monosomy.

Question 16

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava homozygous child?

Accepted Answer

A) 0 percent 
B) 25 percent 
C) 50 percent 
D) 75 percent 
E) 100 percent

Question 17

Thcolor of thsnowshoharis controlleby

Accepted Answer

A) multiple alleles. 
B) quantitative inheritance. 
C) incomplete dominant gene. 
D) nondisjunction. 
E) variation in season, with winter season producing white fur.

Question 18

Queen Victoria

Accepted Answer

A) was a carrier of hemophilia. 
B) had a hemophilic parent. 
C) had hemophilia. 
D) married a man with hemophilia. 
E) developed a mutation for hemophilia.

Question 19

How many plants woulhavpurplflowers antall stems?

Accepted Answer

A) 1 
B) 3 
C) 5 
D) 9 
E) 16

Question 20

Examine the following figure, and answer questions 55-60.Purple flower (A) is dominant over white flower (a), and tall stem (B) is dominant over short stem (b).The Punnett square represents a cross between two dihybrids (AaBb x AaBb).
 
-What woulbthgenotypof plant #14?

Accepted Answer

A) Aabb 
B) aaBb 
C) AaBB 
D) AABB 
E) aaBB

Exam 9: Patterns of Inheritance

Thmost accuratdescription of an organiswith genotypAaBb is

Who proposethlaw of independent assortment?

If R is dominant to r, thoffspring of thcross of RR with rr will

If a chilbelongs to blootypO, hor shcoulNOT havbeen produceby which set of parents?

If onparent has typA blooanthother parent has typB, then which of thfollowing is possiblin thchildren?

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava normal child?

Four of thfivanswers listebelow arcauseby recessivgenes.Select thEXCEPTION.

Which organisdiMendel usto work out thlaws of segregation anindependent assortment?

Genes that arlocateon thsamchromosome

In cystic fibrosis patients,

Thfailurof chromosomes to separatduring mitosis or meiosis is called

In average, cystic fibrosis patients live

Which of thfollowing statements is truabout a normal CFTR protein?

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava heterozygous child?

If a gametis missing onchromosome,

Achondroplasia is an autosomal dominant disorder.If a newly weddecouplfinds after genetic screening that they arboth heterozygous for alleles responsiblfor that genetic disorder, what is their chancto hava homozygous child?

Thcolor of thsnowshoharis controlleby

Queen Victoria

How many plants woulhavpurplflowers antall stems?

Examine the following figure, and answer questions 55-60.Purple flower (A) is dominant over white flower (a) , and tall stem (B) is dominant over short stem (b) .The Punnett square represents a cross between two dihybrids (AaBb x AaBb) . -What woulbthgenotypof plant #14?