Scantron Test Form

Mendelian Genetics & Heredity  
Practice Test Questions II

from Science Prof Online

ANAT & PHYSGENERAL BIOCELL BIOMICRO 8wkMICRO 15wkINSTRUCTORS


Genetics & Heredity Sample Test Qus - Part 2

SPO VIRTUAL CLASSROOMS
2. All the offspring from a white hen and a black rooster are grey. The simplest explanation for this pattern of inheritance is...

a. complete dominance
b. codominance
c. incomplete dominance
d. sex linkage


3. In a diploid organism, most genes come in alternative forms called _____________. An individual with two identical versions of a gene is said to be _______________, while an individual with two different versions of a gene is said to be _______________.

a. alleles, heterozygous, homozygous
b. genomes, normal, a mutant
c. alleles, homozygous, heterozygous
d. alleles, diploid, haploid
e. diploids, homologue, heterologue

1. Whether an allele is dominant or recessive depends on ...

a. how common the allele is relative to other alleles.

b. whether it is inherited from the mother or the father.

c. whether it or another allele determines the phenotype when both are present.

d. whether or not it is linked to other genes.

​The following questions, from the Virtual Biology Classroom, are designed to help students better understand this topic. All questions are based on material that can be found on the Mendelian Genetics & Heredity Lecture Main Page.

Genetics & Heredity 
Review Questions

Free review questions to help students better understand
 Genetics & Heredity.

Blue Eyes Recessive Trait
< Go to GENETICS & HEREDITY MAIN PAGE
Human Heredity Photos Button
SCIENCE PHOTOS
Page last updated 2/2016
Science Prof Online 
has several 
Virtual Classrooms
including:

General Biology
(15 weeks)

Cell Biology for Health Careers 
(8 weeks)

Applied Microbiology 
(8-weeks)

Microbiology 
(16 weeks)

SPO Instructor's Corner

Dominant Genetic Trait of Tongue Rolling
Virtual Biology
Classroom






You have FREE access to a large collection of materials used in a college-level introductory biology course. The Virtual Biology Classroom provides a wide range of free educational resources including PowerPoint Lectures, Study Guides, Review Questions &  Practice Test Questions.
Hawaiian Ginger Flower
6. A man with type B blood and a woman with type A blood could have a children of which of the following phenotypes?

a. A, B, or O       b. AB only       c. AB or O        
                   d. A, B, AB or O


7. In a situation of incomplete dominance, if I cross a red snapdragon and a white snapdragon, what will be the phenotype of their offspring?

a. All red
b. RW
c. Some red, some white
d. All pink


8. In a case of complete dominance, a cross between two parents who are pure for a certain trait will result in offspring that are:

a.heterozygous
b.homozygous
c.some homozygous some herterozygous
d.incomplete dominance
e. monozygous

4. The genetic makeup of an organism is its ________________, while the physical traits of an organism are called its_____________.

a. genotype, phenotype
b. homologue, heterologue
c. RNA, DNA
d. phenotype, genotype
e. genome, karyotype


5. Jeff was found to be heterozygous (Bb) for the bent little finger trait. The alleles represented by the letters B and b are...

a. on the X chromosome
b. linked
c. on homologous chromosomes
d. both present in each of Jeff's sperm cells

9. Mendel’s Law of Segregation indicates that:

q.A cross between parents pure for a certain trait will produce hybrids
b.For genes that are not on the same chromosome, alleles assort independently of one another into gametes
c.Alleles of a gene are sorted into separate sex cells and then recombine with another allele at fertilization
d.Chromosomes move apart during anaphase II of meiosis


10. If I cross a pea plant that is homozygous dominant for tallness and one that is recessive for shortness, what will the genotype of the offspring be? (T and t represent the alleles for height in pea plants).

a. All will be tall    b. TT    c. Tt    d. tt



Click here for more Mendelian Genetics & Heredity practice test questions.

6. A man with type B blood and a woman with type A blood could have a children of which of the following phenotypes?

a. A, B, or O    b. AB only    c. AB or O    d. A, B, AB or O


7. In a situation of incomplete dominance, if I cross a red snapdragon and a white snapdragon, what will be the phenotype of their offspring?

a. All red
b. RW
c. Some red, some white
d. All pink


8. In a case of complete dominance, a cross between two parents who are pure for a certain trait will result in offspring that are:

a.heterozygous
b.homozygous
c.some homozygous some herterozygous
d.incomplete dominance
e. monozygous