Genetics and Evolution Multiple choice questions NEET Biology
NEET Biology Genetics and evolution multiple choice questions in self practice test. The answers are also given.
Each test contains ten multiple choice questions only.
They are based on 10 + 2 syllabus. Genetics and Evolution : It includes Heredity and Variation, Molecular basis of Inheritance and Evolution.
You should study the lesson Genetics and Evolution in the latest textbook of NCERT or other.
These questions were given in previous years competitive examinations.
Biology NEET Genetics and evolution Multiple choice questions
Genetics and evolution
Genetics and Variation
Molecular basis of Inheritance
Evolution
Multiple choice Questions
Self Practice test 1
1) Triticale, the first man made cereal crop has been obtained by crossing wheat with :
1. Rye
2. Pearl millet
3. Sugarcane
4. Barley
2) One turn of the helix in a B-form DNA is approximately :
1. 20 nm
2. 0.34 nm
3. 3.4 nm
4. 22 nm
3) Amino acid sequence in protein synthesis is decided by the sequence of
1. tRNA
2. mRNA
3. cRNA
4. rRNA
4) Phenotype of an organism is the result of :
1. Mutations and linkages
2. Cytoplasmic effects and nutrition
3. Environmental changes and sexual dimorphism
4. Genotype and environment interactions
5) Test cross involves :
1. Crossing between two genotypes with recessive trait
2. Crossing between F1 hybrids
3. Crossing the F1 hybrid with a double resistive genotype
4. Crossing between two genotypes with dominant triat
6) Which one of the following is the most suitable medium for culture of Drosophila malanogaster ?
1. Moist bread
2. Agar agar
3. Ripe banana
4. Cow dung
7) In which mode of inheritance do you expect more maternal influence among the offspring ?
1. Autosomal
2. Cytoplasmic
3. Y- linked
4. X- linked
8) A human male produces sperms with the genotypes AB, Ab, aB and ab in equal proportions. What is the corresponding genotype of this person :
1. AaBb
2. AaBB
3. AABb
4. AABB
9) Two genes R and Y are located very close on the chromosomal linkage map of maize plant. When RRYY and rryy genotypes are hybridized, the F2 segregation will show :
1. Higher number of the Recombinant types
2. Segregation in the expected 9:3:3:1 ratio
3. Segregation in 3 : 1 ratio
4. Hair number of the parental types
10) Polysome is formed by :
1. A ribosome with several sub units
2. Ribosomes attached to each other in a linear arrangement
3. Several ribosomes attached to a single mRNA
4. Mini ribosomes attached to a strand of endoplasmic reticulum
Answers for self practice test 1
1. 1
2. 3
3. 2
4. 4
5. 3
6. 3
7. 2
8. 1
9. 4
10. 3
Practice test (small) Genetics and Evolution NEET Biology
Self Practice test 2
1) Which one of the following pairs of nitrogenous bases of nucleic acids, is wrongly matched with the category mentioned against it ?
1. Guanine, Adenine – Purines
2. Adenine, Thymine – Purines
3. Thymine, Uracil – Pyrimidines
4. Uracil, Cytosine – Pyrimidines
2) In the hexaploid wheat, the haploid (n) and basic (x) number of chromosomes are :
1. n = 7 and x = 21
2. . n = 21 and x = 21
3.. n = 21 and x = 14
4. n = 21 and x = 7
3) The Okazaki fragments in DNA chain growth :
1. Result in transcription
2. Polymerize in the 3′ to 5′ direction and forms replication fork
3. Prove semi – conservative nature of DNA replication
4. Polymerize in the 5′ to 3′ direction and explain 3′ to 5′ DNA replication
4) The most popularly known blood grouping in the ABO grouping. It is named ABO and not ABC because “O” in it to refers to having :
1. No antigens A and B and RBCs
2. Other antigens besides A and B on RBCs
3. Overdominance of this type on the genes for A and B types
4. One antibody only – either anti-A or anti-B on the RBCs
5) What is not true for genetic code :
1. It is unambiguous
2. A codon in mRNA is read in a non -contagious fashion
3. It is nearly universal
4. It is degenerate
6) Sickle cell anemia is :
1. Characterized by elongated sickle like RBCs with a nucleus
2. An autosomal linked dominant trait
3. Caused by substitution of valine by glutamic acid in the beta globin chain of hemoglobin
4. Caused by a change in a single base pair of DNA
7) Which of the following bond is not related to nucleic acid :
1. H – Bond
2. Easter Bond
3. Glycosidic Bond
4. Peptide Bond
8) Whose experiments cracked the DNA and discovered unequivocally that a genetic code is a “triplet” :
1. Beadle and Tatum
2. Niremberg and Mathaei
3. Hershey and Chase
4. Morgan and Sturtevant
9) The genotype of a plant showing the dominant phenotype and can be determined by :
1. Pedigree analysis
2. Back cross
3. Test cross
4. Dihybrid cross
10) Which one of the following pairs of codons is correctly matched with their function or the signal for the particular amino acid ?
1. AUG, ACG – Start/Methionine
2. UUA, UCA – Leucine
3. GUU, GCU – Alanine
4. UAG, UGA – Stop
Answers for self practice test 2
1. 2
2. 4
3. 4
4. 1
5. 2
6. 4
7. 4
8. 2
9. 3
10. 4
Self Practice test 3
1) Select the incorrect statement from the following :
1. Baldness is a sex -limited trait
2. Linkage is an exception to the principle of independent assortment in heredity
3. Galactosemia is an inborn error of metabolism
4. Small population size results in random genetic drift in a population
2) Select the correct statement from the ones gives below with respect to dihybrid cross :
1. Genes loosely linked on the same chromosome show similar recombinations as the tightly linked ones
2. Tightly linked genes on the same chromosome show very few recombinations
3. Tightly linked genes on the same chromosome show higher recombination
4. Genes far apart on the same chromosome show very few combinations
3) Satellite DNA is useful tool in :
1. Forensic science
2. Genetic engineering
3 Organ transplantation
4. Sex determination
4) Select the two correct statements out of the four (a – d) given below about lac operon:
a. Glucose are galactose may bind with the repressor and inactivated
b. In the absence of lactose the repressor binds with the operator region
c in the z-gene in codes for permease
d. This was elucidated by Francois Jacob and Jacque Monad
The correct statements are :
1. b and d
2. a and b
3. b and c
4. a and c
5) A test cross is carried out to :
1. Assess the number of Alleles of a gene
2. Determine whether two species or varieties will breed successfully
3. Determine the genotype type of a plant at F2
4. Predict weather two traits are linked
6) Test cross in plants or in Drosophila involves crossing :
1. Between two genotypes with dominant trait
2. Between two genotypes with recessive triat
3 Between two F1 hybrids
4. The F1 hybrid with a double recessive genotype
7) Which one of the following is a wrong statement regarding mutations ?
1. UV and Gamma rays are mutagens
2. Change in a single base pair of DNA does not cause mutation
3 Deletion and insertion of base pairs cause frame shift mutation
4. Cancer cells commonly show chromosomal aberrations.
8) Which enzyme/s will be produced in a cell in which there is a nonsense mutation in the lac Y gene ?
1. Lactose permease and transaetyase
2. Beta galactosidase
3. Lactose permease
4. Transacetylase
9) Which of the following statements is not true or two genes that shows 50% recombination frequency ?
1. If the genes are present on the same chromosome, they undergo more than one crossovers in every meiosis
2. The genes may be on different chromosomes
3. The genes are tightly linked
4. The genes show independent assortment
10) In a population of 1000 individuals 360 belong to genotype AA, 480 to aa and the remaining 160 to aa. Based on this data, the frequency of allele A in the population is :
1. 0.4
2. 0.5
3. 0.6
4. 0.7
Answers to self test 3
1. 1
2. 2
3. 1
4. 1
5. 3
6. 4
7. 2
8. 2
9. 3
10. 3
M
Note You must be answered the multiple choice questions in your own way. Check whether the answers are related to the lesson in the textbook.
If any mistakes in this, please inform.