Genetics Questions Online Test 10

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. To eliminate chance factor, Mendel performed

• monohybrid cross
• dihybrid cross
• reciprocal cross
• trihybrid cross

2. Mendel always started his experiment(Monohybrid and Dihybrid cross) with

• any pea plant
• a heterozygous plant
• a pure line plant
• a fresh new plant

Genetics MCQs part 8

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. The botanical name of garden pea is

• Pisum sativum
• Lathyrus odoratus
• Mangifera indica
• Solanum tuberosum

2. Which of the following is a dominant character in pea?

• Wrinkled seeds
• Inflated pod
• Terminal flower
• Dwarf plant

3. Which of the following character was not considered by Mendel?

• Seed coat colour
• Wrinkled or round leaves
• Tallness or dwarfness
• Position of flower

4. An inherited character and its detectable variant is called

• allele
• trait
• gene
• both (A) and (B)

5. Which one of the following best describes a gene?

• A triplet of nucleotide bases
• A specific length of DNA responsible for the inheritance and expression of the character
• A specific length of single stranded RNA
• Both (B) and (C)

6. Mendel’s “factors” are in fact

• units
• chromosomes
• genes
• none of these

7. Who coined the term ‘gene’ for ‘factor’?

• Mendel
• Morgan
• Johannsen
• Punnett

8. Alleles or allelomorphs occupy

• same position on homologous chromosomes
• same position on heterozygous chromosomes
• different position on homologous chromosomes
• different position on heterozygous chromosomes

9. Who proposed the term ‘Allelomorph’?

• Hugo De Vries
• Morgan
• Tschermak
• Bateson

10. Dominant allele means

• an allele whose effect is masked by another allele
• an allele that prevents the expression of the other allele
• an allele without any effect
• an allele which cannot express in presence of other

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Genetics Question Online Test =>
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Animal Biotechnology MCQs Part 9

1. Introduction of foreign genes for improving genotype is ______________

• Tissue culture
• Immunisation
• Biotechnology
• Genetic engineering

2. Where do the female gonads (paired ovaries) lie?

• Pelvic cavity
• Thoracic cavity
• abdominal
• Scrotal sacs

Genetics MCQs part 7

Solve Genetics Questions Online Test for 11th and 12th, Bachelor Studies,competitive Examination like CSIR NET, CBSE NEET, IELTS, GRE etc .

1. The term “factor” for gene was coined by

• William Bateson
• Johann Mendel
• Johannsen
• F. Griffith

2. Gregor Mendel was born in

• U.K
• Austria
• Russia
• Czechoslovakia

3. Mendel was a

• physiologist
• mathematician
• cytologist
• taxonomist

4. The first scientific study leading to the formulation of laws of inheritance was carried out by

• Darwin
• Hugo De Vries
• Lemarck
• Mendel

5. Under which title was Mendel’s work published in Natural History Society of Brunn?

• Mendel’s Laws of Inheritance
• Experiments in Plant Hybridization
• Experiment on Heredity and Variation
• Origin of Species

6. Mendel’s laws were first published in the year

• 1875
• 1890
• 1928
• 1866

7. The year 1900 A.D. is highly significant for geneticists due to

• chromosome theory of heredity
• discovery of genes
• rediscovery of Mendelism
• principle of linkage

8. The Mendelian principles of inheritance were rediscovered by

• Sutton and Boveri
• Hugo de Vries, Tschermark and Correns
• Lederberg and Tatum
• Morgan

9. Mendel’s work was rediscovered by three biologists from which of the following countries?

• Holland, France and England
• Holland, England and Austria
• Germany, France and England
• Austria, Holland and Germany

10. Mendel selected pea plant because of

• its short life span
• it produced many seeds and large flowers
• many contrasting characters
• all of these

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Genetics Question Online Test =>
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Animal Biotechnology MCQs Part 8

1. Immediately after ovulation, the mammalian egg is covered by a membrane known as _____

• chorion
• zona pellucida
• corona radiata
• vitelline membrane

2. Each centriole in the mature sperm consist of _______________

• 2 central and 9 peripheral fibrils
• 3 central and 6 peripheral fibils
• 4 central and 5 peripheral fibrils
• 9 central and 2 peripheral fibrils

Protein MCQs Part 9

1. For synthesis of prostaglandins, the essential fatty acids give rise to a fatty acid containing

• 12 carbon atoms
• 16 carbon atoms
• 20 carbon atoms
• 24 carbon atoms

2. All active prostaglandins have at least one double bond between positions

• 7 and 8
• 10 and 11
• 13 and 14
• 16 and 17

3. Normal range of plasma total phospholipids is

• 0.2–0.6 mmol per L
• 0.9–2.0 mmol per L
• 1.8–5.8 mmol per L
• 2.8–5.3 mmol per L

4. HDL2 have the density in the range of

• 1.006–1.019
• 1.019–1.032
• 1.032–1.063
• 1.063–1.125

5.β-lipoproteins have the density in the range of

• 0.95–1.006
• 1.006–1.019
• 1.019–1.063
• 1.063–1.125

6. IDL have the density in the range of

• 0.95–1.006
• 1.006–1.019
• 1.019–1.032
• 1.032–1.163

7. Aspirin inhibits the activity of the enzyme:

• Lipoxygenase
• Cyclooxygenase
• Phospholipae A1
• Phospholipase A2

8. A ’suicide enzyme’ is

• Cycloxygenase
• Lipooxygenase
• Phospholipase A1
• Phospholipase A2

9. In adipose tissue prostaglandins decrease

• Lipogenesis
• Lipolysis
• Gluconeogenesis
• Glycogenolysis

10. The optimal pH for the enzyme pepsin is

• 1.0–2.0
• 4.0–5.0
• 5.2–6.0
• 5.8–6.2

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Protein MCQs Parts => 1.. 2.. 3.. 4.. 5.. 6.. 7.. 8.. 9.. 10..

Molecular Genetics MCQs part 1

1. In a nucleotide, the nitrogen base is joined to the sugar molecule by

• Phosphodiester bond
• Glycosidic bond
• Hydrogen bond
• (a) & (b)

2. If a double stranded DNA has 20% Thymine, the percentage of Guanine in the DNA

• 30%
• 10%
• 90%
• 40%

3.If a DNA contains 1000 base pairs, what would be its length?

• 3400 Å
• 34000 Å
• 6800 Å
• 1000 Å

4. What is not True for DNA in prokaryotes

• present in the form of a compact structure called nucleoid
• the coils are maintained by non-histone basic proteins
• found in cytoplasm in a supercoiled condition
• packaged as nucleosomes along with histones

5. Pick the right difference between a DNA and RNA

• Sugar and phosphate
• sugar and purines
• purines and phosphate
• sugar and pyrimidines

6. In the following questions, a statement of Assertion (A) is followed by a statement of Reason (R).
Assertion: In Griffith’s experiment mice were injected by a mixture of heat killed Smooth type bacteria and live Rough type bacteria. Some mice died of pneumonia and their blood contained both live Rough type bacteria and live Smooth type bacteria.
Reason: The dead Smooth type bacteria became alive and caused pneumonia. Griffith named it as transforming principle.

• If both Assertion and Reason are true and the reason is the correct explanation of the assertion, then mark (a)
• If both Assertion and Reason are true but the reason is not the correct explanation of the assertion, then mark (b)
• If Assertion is true but Reason are false, then mark (c)
• If both Assertion and Reason are false, then mark (d)

7. Hershey and Chase experiment proving DNA as the genetic material was based on the principle

• Transduction
• transformation
• transcription
• translation

8. A bacterial colony containing DNA made up of 100% N15 nitrogen bases is allowed to replicate in a medium containing N14 bases. After one round of replication the result would be

• All individuals will be identical to parents
• All individuals will be hybrids
• Only 50% individuals would be hybrids
• All individuals would have DNA made up of 100% N¹⁴

9. Teminism is

• a central dogma reverse
• a central dogma of molecular biology
• a circular flow of hereditary material
• an effect of cytoplasm on functioning of DNA

10. Cistron is

• The coding sequence of DNA
• The functional unit of DNA molecule that codes for a particular gene product
• Intervening non coding sequence of DNA
• The sequences which are removed during RNA splicing

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Molecular Genetics MCQs Parts => 1..