Samacheer Kalvi EM 12 Bio - Botany Unit7 Chapter2 MCQs Mock Test
byJunaid Baig0-
12th Bio - Botany Mock Test
Chapter 2: Classical Genetics
Choose the correct answer from the multiple choices, then click "Next" to goto next question and click "OK" after seeing the score.
Extra nuclear inheritance is a consequence of presence of genes in
Mitrochondria and chloroplasts
Endoplasmic reticulum and mitrochondria
Ribosomes and chloroplast
Lysosomes and ribosomes
In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype
aaBB
AaBB
AABB
aabb
How many different kinds of gametes will be produced by a plant having die genotype AABbCC?
Three
Four
Nine
Two
Which one of the following is an example of polygenic inheritance?
Flower colour in Mirabilis Jalapa
Production of male honey bee
Pod shape in garden pea
Skin Colour in humans
In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F2 generation of the cross RRYY x rryy?
Only round seeds with green cotyledons
Only wrinkled seeds with yellow cotyledons
Only wrinkled seeds with green cotyledons
Round seeds with yellow cotyledons an wrinkled seeds with yellow cotyledons
Test cross involves
Crossing between two genotypes with recessive trait
Crossing between two F1 hybrids
Crossing the F1 hybrid with a double recessive genotype
Crossing between two genotypes with dominant trait
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in generation?
9:3
1:3
3:1
50:50
The genotype of a plant showing the dominant phenotype can be determined by
Back cross
Test cross
Dihybrid cross
Pedigree analysis
Select the correct statement from the ones given below with respect to dihybrid cross
Tightly linked genes on the same chromosomes show very few combinations
Tightly linked genes on the same chromosomes show higher combinations
Genes far apart on the same chromosomes show very few recombinations
Genes loosely linked on the same chromosomes show similar recombinations as the tightly I linked ones
Which Mendelian idea is depicted by a cross in which the F1 generation resembles both the parents
Incomplete dominance
Law of dominance
Inheritance of one gene
Co-dominance
Fruit colour in squash is an example of
Recessive epistasis
Dominant epistasis
Complementary genes
Inhibitory genes
In his classic experiments on Pea plants, Mendel did not use
Flowering position
Seed colour
Pod length
Seed shape
The epistatic effect, in which the hybrid cross 9:3:3:1 between AaBb Aabb is modified as
Dominance of one allele on another allele of both loci
Interaction between two alleles of different loci
Dominance of one allele to another alleles of same loci
Interaction between two alleles of some loci
In a test cross involving F1 dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates
The two genes are located on two different chromosomes
Chromosomes failed to separate during meiosis
The two genes are linked and present on the some chromosome
Both of the characters are controlled by more than one gene
The genes controlling the seven pea characters studied by Mendel are known to be located on h6w many different chromosomes?
Seven
Six
Five
Four
Which of the following explains how progeny can posses the combinations of traits that none of the parent possessed?
Law of segregation
Chromosome theory
Law of independent assortment
Polygenic inheritance
“Gametes are never hybrid”. This is a statement of
Law of dominance
Law of independent assortment
Law of segregation
Law of random fertilization
Gene which suppresses other genes activity but does not lie on the same locus is called as
Epistatic
Supplement only
Hypostatic
Codominant
Pure tall plants are crossed with pure dwarf plants. In the F1 generation, all plants were tall. These tall plants of generation were selfed and the ratio of tall to dwarf plants obtained was 3:1. This is called
Dominance
Inheritance
Codominance
Heredity
The dominant epistatis ratio is
9:3:3:1
12:3:1
9:3:4
9:6:1
Select the period for Mendel’s hybridization experiments
1856 – 1863
1850 – 1870
1857-1869
1870 – 1877
Among the following characters which one was not considered by Mendel in his experimentation pea?
Stem – Tall or dwarf
Trichomal glandular or non-glandular
Seed – Green or yellow
Pod – Inflated or constricted
Samacheer Kalvi EM 12th Std Bio - Botany Unit 7 Chapter 2 MCQs Mock Test Instructions
Chapter 2: Classical Genetics
Here you will find 22 MCQs questions and options. Read the questions carefully and select the appropriate answer for the question by selecting/clicking the box before the option. A pop-up box will open by displaying the result of the option selected. The result of each question will be based on percentages. Each question will have 3 chances to select the right option and for every chance, the percentage of scores will be reduced. Likewise, the remaining questions also take place. The overall percentage scored will be displayed at the completion of the mock test.
Note: Every time the page loads, the question and options will be randomized and takes you to the beginning of the particular exercise.
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