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Hassan
1.Which of the following ratio shows complementary gene interaction?
A. 9:7
B. 15:1
C. 1:2:1
D. 9:7
2.Which of the following does not show Mendel’s law of inheritance?
A. Masking gene interaction
B. Epistasis
C. Supplementary gene interaction
D. Masking gene interaction
3.What is epistasis?
A. Type of linkage
B. Masking or modifying gene effect
C. Upper portion of a chromosome
D. Type of linkage
4.Which of the following is NOT the type of epistasis?
A. Dominant
B. Recessive
C. Collabrative
D. Dominant
5.Choose the correct ratio, which shows the masking gene interaction?
A. 12:3:1
B. 9:3:4
C. 1:2:1
D. 12:3:1
6.Name the phenomenon where two genes have the same expression of the character?
A. Pleiotropy
B. Phenocopy
C. Penetrance
D. Pleiotropy
7.What is psudoallele?
A. Allele with similar function
B. Allele with similar structure
C. Alleles with similar function and structure
D. Allele with similar function
8.Name the effect which shows the change in expression of alleles of the gene due to a specific environmental condition?
A. Pleiotropy
B. Linkage
C. Phenocopy
D. Pleiotropy
9.The tendency of two or more than two genes to stay together during inheritance is called?
A. Genetics
B. Gene interaction
C. Crossing over
D. Genetics
10.Which of the following statement is NOT true regarding linkage group?
A. Group of physically linked genes
B. Represent a haploid number of chromosomes
C. Shown by linkage map
D. Group of physically linked genes
11.What is the unit of linkage map?
A. Morgan
B. Centi-morgan
C. Centimeter
D. Morgan
12.What is the maximum percentage of recombination frequency between two genes?
A. 75%
B. 100%
C. 50%
D. 75%
13.Name the phenomenon which can break the occurrence of linkage?
A. Crossing over
B. Linkage
C. Reconstruction
D. Crossing over
14.Failure in which of the following phenomenon would result in linkage?
A. Law of dominance
B. Law of segregation
C. Law of independent assortment
D. Law of dominance
15.Name the organism whose first genetic map was made?
A. Rat
B. Arabidopsis
C. Fly
D. Rat
16.Two genes are 70cM apart, calculate the recombination frequency?
A. 50%
B. 100%
C. 25%
D. 50%
17.Name the sites of DNA, which have a high probability of crossing over?
A. Cold spots
B. Hot spots
C. Covalent bond
D. Cold spots
18.Traits which show continuous variation is referred as ?
A. Genetic disorders
B. Phenotypic variation
C. Quantitative traits
D. Genetic disorders
19.Which of the following factor does not contribute to quantitative traits?
A. Polygenes
B. Environmental
C. Genetic
D. Polygenes
20.Who explained the multifactorial hypothesis?
A. Nilsson-Ehle
B. Mendel
C. Darwin
D. Nilsson-Ehle
21. Which of the following describes the dissimilarity in the traits due to the variation in genetic factors?
A. Polygenic
B. Heritability
C. Quantitative trait loci
D. Polygenic
22.Which of the following describes the inheritance controlled by cytoplasmic genes?
A. Extranuclear inheritance
B. Heritability
C. Environmental factors
D. Extranuclear inheritance
23.Which of the following is NOT true for cytoplasmic inheritance?
A. Reciprocal cross is always different
B. Unequal contribution from male and female gametes
C. It follows a Mendelian pattern of inheritance
D. Reciprocal cross is always different
24.What is a petite mutant?
A. Maternal effect genes
B. Dwarfism
C. Plastid function mutant
D. Maternal effect genes
25.Which of the following is NOT the type of petite mutant?
A. Nuclear
B. Neutral
C. Suppressive
D. Nuclear
26.Name the effect which shows the determination of character by the genotype of a female parent?
A. Cytoplasmic male sterility
B. Probability
C. Random mating
D. Cytoplasmic male sterility
27.1. Which one of the following is NOT covered under Taxonomy?
A. a) Alpha taxonomy
B. b) Beta taxonomy
C. c) Delta taxonomy
D. a) Alpha taxonomy
28.The ability of an organism to resist infections by the pathogens is called___________
A. Infection
B. Hypersensitivity
C. Immunity
D. Infection
29.2. Organizing taxonomic information in logical classification is called_________
A. a) Systematics
B. b) Phenetic
C. c) Phylogenetic
D. a) Systematics
30.Which of the following compounds is NOT found in tears?
A. Lysozyme
B. Lactoferin
C. IgA
D. Lysozyme
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