Mendelian Genetics Quiz | Mendelian Genetics Objective Type Questions and Answers

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21 Mendel’s findings were rediscovered by
A De vries
B Correns
C tschermak
D all of the above

Answer: all of the above
22 Mendel presented his works in
A Natural History Society in Russia
B Natural History Society in America
C Natural History Society in Brunn
D Natural History Society in Germany

Answer: Natural History Society in Brunn
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23 Who is regarded as the father of genetics?
A Bateson
B Morgan
C Mendel
D watson

Answer: Mendel
24 The tendency of offspring to differ from parents is called
A Varaition
B Heridity
C Inheritance
D Resemblance

Answer: Varaition
25 A pedigree chart shows:
A The genotypic ratios of the offspring
B The types of gametes produced by the parents
C The pattern of inheritance of a specific gene
D Which genes are co-dominant

Answer: The pattern of inheritance of a specific gene
26 Normal human eggs have:
A 22 autosomes and an X chromosome
B 22 autosomes and a Y chromosome
C 23 autosomes
D 46 chromosomes

Answer: 22 autosomes and an X chromosome
27 Mendel discovered principles of inheritance because he:
A Observed simultaneously all of the many characteristics in which the parents differed
B Believed that the hereditary characteristics of two individuals became thoroughly blended in the offspring
C Ignored all characteristics except a few markedly contrasting ones in which he studied
D Studied only the offspring obtained from a single mating

Answer: Observed simultaneously all of the many characteristics in which the parents differed
28 Which of the following factors could lead to variations in the offspring of asexually reproducing organisms?
A Crossing over
B Fertilization
C Mutations
D Independent assortment

Answer: Independent assortment
29 Which statement concerning a pair of alleles for a gene controlling a single characteristic in humans is true?
A Both genes come from the father
B Both genes come from the mother
C One gene comes from the mother and one gene comes from the father
D The genes come randomly in pairs from either the mother or father

Answer: One gene comes from the mother and one gene comes from the father
30 If two white sheep produce a black offspring, the parent’s genotypes for colour must be:
A Heterozygous
B Homozygous white
C Homozygous black
D Not enough information was given

Answer: Homozygous black
31 An extra finger in humans is rare but is due to a dominant gene. When one parent is normal and the other parent has an extra finger but is heterozygous for the trait, what is the probability that the first child will be normal?
A 0%
B 25%
C 50%
D 75%

Answer: 75%
32 Which blood type would not be possible for children of a type AB mother and a type A father?
A O
B A
C B
D AB

Answer: AB
33 An example of a genotype is:
A A tall pea plant
B R and r
C TtHH
D Hemophiliac

Answer: TtHH
34 Which of the following gives information about the phenotype but not the genotype?
A XHY
B Hemophiliac man
C Tall pea plant
D Female carrier for colour-blindness

Answer: XHY
35 The step of mitosis in which chromosomes line up along the equatorial plane of the cell is called:
A Prophase
B Metaphase
C Anaphase
D Telophase

Answer: Metaphase
36 Mitosis involves separation of only sister chromatids while meiosis involves?
A Also separation of only sister chromatids
B Separation of only homologous chromosomes
C Separation of homologous chromosomes as well as sister chromatids
D Separation of sister chromatids twice

Answer: Separation of homologous chromosomes as well as sister chromatids
37 If one parent has type A blood and the other parent has type B blood, what blood type will the offspring denoted by the white square and circle have?
A Type A
B Type B
C Type AB
D Type O

Answer: Type O
38 Mitotic cell division results in two cells that have:
A n chromosomes and are genetically identical
B n chromosomes and are genetically different
C 2n chromosomes and are genetically identical
D 2n chromosomes and are genetically different

Answer: 2n chromosomes and are genetically identical
39 In tobacco, if the diploid number of chromosomes is 48, how many chromosomes will be found in a pollen grain?
A 96
B 48
C 24
D 12

Answer: 24
40 The four cells produced in meiosis will have a:
A 2n number of chromosomes and will differ genetically from each other
B 2n number of chromosomes and will be genetically identical to each other
C n number of chromosomes and will be genetically identical to each other
D n number of chromosomes and will differ genetically from each other

Answer: n number of chromosomes and will differ genetically from each other

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