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Types of Dominance In Genetics

Types of Dominance In Genetics

  • Gregor Mendel used the term dominant and recessive allele. The gene expresses itself in the first filial generation called the dominant gene and it suppresses the phenotype of another gene of allele called recessive allele. This is called dominance, there are three types of Dominance in Genetics
  • Complete Dominance
  • Incomplete dominance
  • Codominance 
  • Overdominance.
Types of Dominance In Genetics mcqs solved with answers


These are about 50 MCQs related to Types of Dominance in genetics with their appropriate answers. This assignment is uploaded by MEHWISH MISBAH GULL PROGRAM BS BOTANY

SEMESTER:                  3rd

NAME:                        MEHWISH MISBAH GULL

ROLL#:                          27

COURSE TITLE:           CELL BIOLOGY, GENETICS, EVOLUTION

TOPIC:DOMINANCE,CODOMINANCE,INCOMPLETE DOMINANCE

Types of Dominance In Genetics

Mcq#01: The relationship b/w two alleles of a gene and their associated phenotypes is known:

  (a)  Incomplete dominance

  (b)  Complete dominance

  (c)  Dominance

  (d)  Co-dominance

Ans: Dominance

Mcq#02: A dominant allele is:

  (a) Recessive to a particular allele

  (b) Dominant to a particular allele

  (c) Co-dominant to a particular allele

  (d) Over dominant to a particular allele

Ans: Dominant to a particular allele

Mcq#03: How many types of dominance are:

  (a) 3

  (b) 4

  (c) 5

  (d) 6

Ans: 4

Mcq#04: The term dominance is used to describe species of animals or plants that exerts the most influence on other species of its community:

  (a) In physiology

  (b) In sociology

  (c) In psychology

  (d) In ecology

Ans: In ecology

Mcq#05: In animal behavior, a ruling animal in a social grouping is described as:

  (a) Recessive

  (b) Dominant

  (c) Co-dominant

  (d) Incomplete dominant

Ans: Dominant

Mcq#06: The first allele is termed as:

  (a) Dominant

  (b) Incomplete dominant

  (c) Recessive

  (d) None

Ans: Dominant

Mcq#07: The state of having two different variants of the same gene on each chromosome is originally caused by:

  (a) Co-dominance

  (b) Inheritance

  (c) Mutation

  (d) Dominance

Ans: Mutation

Mcq#08: The terms autosomal dominant or recessive are used to describe gene variants on:

  (a) X-linked dominant

  (b) Sex chromosomes

  (c) Non- sex chromosomes

  (d) None     

Ans: Non sex chromosomes

Mcq#09: If there are multiple alleles for a gene which of the following is true:

  (a) All the alleles same expressed at the same time

 (b) Among the multiple copies resent only the most dominant one is expressed

(c) Only two alleles are present at a time

(d) Only one allele is dominant rest all are recessive

Ans: Only two alleles are present at a time

Mcq#10: In incomplete dominance:

(a) the phenotype of both alleles is completely expressed

(b) the phenotype of only one allele is expressed

(c) Phenotype of neither of the allele are expressed

(d) Phenotype of both alleles is partially expressed

Ans: Phenotype of both alleles is partially expressed

Mcq#11: An organism that possesses the same alleles for a specific gene and can truly breed for the allele is described as homozygous:

(a) Two

(b) Three

(c)  Four

(d) Five

Ans: Two

Mcq#12: Incomplete dominance occurs in the heterozygote, in which the dominant allele:

(a) Dominate the recessive allele

(b) Does not dominate the recessive allele

(c) Both

(d) None

Ans: Does not dominate the recessive allele

Mcq#13: Codominance occurs when the alleles do not show any:

(a) Dominant relationship

(b) Recessive relationship

(c) Dominant and recessive relationship

(d) None

Ans: Dominant and recessive relationship          

Mcq#14: The phenotypic expression of homozygous in codominance is:

(a) Dependent

(b) Independent

(c) uniformly conspicuous    

(d) Intermediate   

Ans: Independent

Mcq#15: The offspring’s phenotype is an intermediate of the:

(a) Parent’s heterozygous traits

(b) Parent’s homozygous traits

(c) Both

(d) None

Ans: Parent’s homozygous traits

Mcq#16: Which type of dominance is used to improve corn crops:

(a) Codominance

(b) Complete dominance

(c) Incomplete dominance

(d) None

Ans: Incomplete dominance

Mcq#17: In plants, the self sterility is an example of multiple alleles that causes the rapid growth of:

(a) Pollen chyma cells

(b) Pollen tube

(c) Stigma

(d) None

Ans: Pollen tube

Mcq#18: Incomplete dominance can also be seen in humans:

(a) By scientific modes

(b) Genetically

(c) Both

(d) None

Ans: Genetically

Mcq#19: Incomplete dominance is old as a human life that leads to:

(a) Dominations with time

(b) Variation with time

(c) Repulsion with time

(d) Both a and b

Ans: Variation with time

Mcq#20: Dominance doest not determine whether an allele is:

(a) Deleterious

(b) Neutral

(c) Advantageous

(d) all

Ans: All

Mcq#21: Both dominant and recessive alleles can be:

(a) less common

(b) extremely common

(c) extremely common or rare

(d) extremely rare

Ans: Extremely common or rare

Mcq#22: Dominance is also _____ to the distributions of alleles in population:

(a) related

(b) same as

(c) unrelated

(d) none

Ans: Unrelated

Mcq#23: Dominance is not inherent to an:

(a) allele only

(b) gene only

(c) allele and its traits

(d) none

Ans: Allele and its traits

Mcq#24: Dominance is a key concept in:

(a) Mendelian inheritance

(b) classical genetics

(c) both a and b

(d) none

Ans: Both a and b

Mcq#25: A classical example of dominance is the inheritance of seed shape in:

(a) olives

(b) peanuts

(c) melons

(d) peas

Ans: Peas

Mcq#26: The phenomena of incomplete dominance is also visible in some:

(a) animals

(b) birds

(c) both

(d) none

Ans: Both

Mcq#27: Example of incomplete dominance can be seen in:

(a) rabbits

(b) dogs

(c) horses

(d) all of these

Ans: All of these

Mcq#28: An Andalusian chicken found in:

(a) China

(b) UAE

(c) Spain

(d) the USA

Ans: Spain

Mcq#29: Codominance is a relationship between two versions of:

(a) genes

(b) chromosomes

(c) DNA

(d) RNA

Ans: Genes

Mcq#30: In codominance, neither allele is recessive and phenotype of:

(a) only one allele is expressed

(b) both alleles is expressed

(c) none

Ans: Both alleles are expressed

Mcq#31: Example of codominance is:

(a) O blood group

(b)B blood group

(c) A blood group

(d) ABO blood group

Ans: ABO blood group

Mcq#32: Human height patterns show the:

(a) complete dominance

(b) incomplete dominance

(c) codominance

(d) none

Ans: Incomplete dominance

Mcq#33: Human skin color is an example of:

(a) incomplete dominance

(b) complete dominance

(c) codominance

(d) none

Ans: Incomplete dominance

Mcq#34: The dominant allele does not dominate over the:

(a) dominant allele

(b) recessive allele

(c) both a and b

(d) none

Ans: Dominant allele

Mcq#35: The quantitative approach can be used for the analysis of:

(a) codominance

(b) incomplete dominance

(c) both a and b

(d) none

Ans: Both a and b

Mcq#36: Due to the mixing of both parent’s phenotypes and genotypes the formed trait in incomplete dominance is:

(a) same

(b) partially same

(c) different

(d) both a and c

Ans: Different

Mcq#37: In codominance, the offsprings show the:

(a) genotype

(b) phenotype

(c) both parental phenotypes

Ans: Phenotype

Mcq#38: Codominance can be found in:

(a) plants

(b) animals

(c) birds

(d) both a and b

Ans: Both a and b

Mcq#39: The term incomplete dominance was proposed by:

(a) Gregor Mendel

(b) Robert Hook

(c) Carl Correns

(d) Le Marck

Ans: Carl Correns

Mcq#40: Carl Correns continued research and conducted an experiment on:

(a) three o’clock flowers

(b) four o’clock flowers

(c) five o’clock flowers

(d) six o’clock flowers

Ans: Four O’clock flowers

Mcq#41: Carl Correns worked on a flowering plant in:

(a) 1898

(b) 1899

(c) 1890

(d) 1892

Ans: 1899

Mcq#42: The expression of a trait in the heterozygous condition is called:

(a) inheritance

(b) genetic process

(c) dominance

(d) codominance

Ans: Dominance

Mcq#43: The trait which appears in the offsprings of the parents with contrasting traits is called:

(a) recessive

(b) dominant

(c) codominant

(d) overdominant

Ans: Dominant

Mcq#44: The trait which is masked or dominated is called:

(a) recessive

(b) codominant

(c) dominant

(d) overdominant

Ans: Recessive

Mcq#45: Deleterious recessive allele may persist in a population at:

(a) high rate

(b) low rate

(c) high frequency

(d) low frequency

Ans: Low frequency

Mcq#46: Dominance is unrelated to the nature of:

(a) genotype

(b) phenotype

(c) both

(d) none

Ans: Phenotype

Mcq#47: A dominant or recessive allele may account for which trait types:

(a) normal

(b) standard

(c) weaker

(d) all of these

Ans: All of these

Mcq#48: Which is a strictly relative effect between two alleles of a given gene of any function:

(a) codominance

(b) complete dominance

(c) dominance

(d) overdominance

Ans: Dominance

Mcq#49: One allele can be dominant over a second allele of:

(a) same gene

(b) different gene

(c) none

Ans: Same gene

Mcq#50: In codominance, individuals receive one version of a gene called:

(a) DNA

(b) chromosome

(c) allele

(d) all of these 

Ans: Allele

These are Mcqs about Types of Dominance In Genetics

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