WBBSE Class 10 Life Science Chapter 3 Heredity and Common Genetic Diseases MCQs

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WBBSE Chapter 3 Topic A Heredity MCQs

Question 1. The mechanism of transmission of characters from the parental generation to the offspring is called as

  1. Genetics
  2. Heredity
  3. Immunity
  4. Eugenics

Answer: 4. Eugenics

Question 2. The idea of mixing parental characters with the offspring is known as

  1. Inheritance
  2. Particulate inheritance
  3. Blending inheritance
  4. Variation

Answer: 3. Blending inheritance

Question 3. Environmental variations are

  1. Not inherited
  2. Inherited
  3. Congenital
  4. Harmful

Answer: 1. Not inherited

Read and Learn More WBBSE Class 10 Life Science Multiple Choice Questions

Question 4. Somatic variations are

  1. Acquired
  2. Genetic
  3. Inherited
  4. Transmissible

Answer: 1. Acquired

Question 5. Variations are usually caused by

  1. Evolution
  2. Adaptation
  3. Asexual reproduction
  4. Mutation

Answer: 4. Mutation

WBBSE Notes For Class 10 Geography And EnvironmentWBBSE Notes For Class 10 History And Environment
WBBSE Solutions For Class 10 Life ScienceWBBSE Class 10 Life Science Multiple Choice Questions
WBBSE Solutions for Class 10 MathsWBBSE Class 10 Maths Multiple Choice Questions
WBBSE Notes For Class 10 Physical Science And Environment

 

Question 6. Which one of the following pairs is not contrasting?

  1. Tall & dwarf
  2. Axial & terminal
  3. Yellow & green
  4. Round & light

Answer: 4. Round & light

Wbbse Class 10 Life Science Mcqs

WBBSE Class 10 Life Science Chapter 3 MCQs With Answers

Question 7. Mendel performed experiments on

  1. Fruit fly
  2. Guineapig
  3. Garden pea (pisum sativum)
  4. Sweet pea (lathynus)

Answer: 3. Garden pea (Pisum sativum)

Question 8. Mendel’s concept gave birth to the theory of inheritance.

  1. Particulate
  2. Blending
  3. Mendelian
  4. Darwinian

Answer: 1. Particulate

Question 9. An organism with two copies of the same allele is

  1. Heterozygous for that trait
  2. Heterologous for that allele
  3. Homozygous for that trait
  4. Homologous for that allele

Answer: 3. Homozygous for that trait

WBBSE Class 10 Life Science Chapter 3 Heredity and Common Genetic Diseases MCQs

Question 10. Mendelian laws of heredity are connected with

  1. Segregation, dominance & independent assortment
  2. Segregation, independent assortment & re-combination
  3. Gene linkage, segregation & independent assortment
  4. Gene linkage, dominance & independent assortment

Answer: 1. Segregation, dominance & independent assortment

Wbbse Class 10 Life Science Mcqs

Question 11. Gene mutations are also known as

  1. Inversion
  2. Point mutation
  3. Deletion
  4. Translocation

Answer: 2. Point mutation

Question 12. A diploid individual’s chromosome is

  1. N
  2. 2N
  3. 3N
  4. 2N+l

Answer: 4. 2N+l

Question 13. In humans, tongue-rolling characteristics are found in

  1. A few
  2. All
  3. None
  4. Most

Answer: 4. Most

Question 14. The attached ear lobe character in humans is

  1. Non-genetic
  2. Dominant
  3. Recessive
  4. Very useful

Answer: 3. Recessive

Question 15. An alternative form of a gene, located at a specific position on a specific chromosome is called

  1. Locus
  2. Trait
  3. Variety
  4. Allele

Answer: 4. Variety

Question 16. The specific location of a gene on a chromosome is called its

  1. Locus
  2. Allele
  3. Trait
  4. Variety

Answer: 1. Locus

Wbbse Class 10 Life Science Chapter 3 Solutions 

Question 17. Mendelian factors are now called

  1. Alleles
  2. Genes
  3. Mutants
  4. Loci

Answer: 2. Genes

Question 18. A genetic cross dealing with two character differences is called

  1. Monohybrid cross
  2. Dihybrid cross
  3. Trihybrid cross
  4. None of the above

Answer: 2. Dihybrid cross

Question 19. The genotype ‘as’ is

  1. Allozygous
  2. Heterozygous
  3. Homozygous
  4. Hemizygous

Answer: 2. Heterozygous

Question 20. The character that is expressed in the heterozygous condition is

  1. Allele
  2. Hybrid
  3. Dominant
  4. Recessive

Answer: 3. Dominant

WBBSE Life Science Chapter 3 Heredity Solved MCQs

Question 21. The outer expression of a character is its

  1. Phenotype
  2. Genotype
  3. Trait
  4. Allele

Answer: 1. Phenotype

Question 22. Pea plants normally perform

  1. Asexual reproduction
  2. Vegetative reproduction
  3. Cross-fertilization
  4. Self-fertilization

Answer: 4. Self-fertilization

Wbbse Class 10 Life Science Chapter 3 Solutions 

Question 23. In case of incomplete dominance in the F2 generation

  1. The genotypic ratio = 3:1
  2. The phenotypic ratio = 3:1
  3. The genotypic ratio = phenotypic ratio
  4. The genotypic ratio phenotypic ratio

Answer: 3. The genotypic ratio = phenotypic ratio

Question 24. The F2 phenotypic ratio of the Mendelian dihybrid cross is

  1. 1:1:1:1
  2. 9:3:3:L
  3. 3:1
  4. 1:2:1

Answer: 3. 3:1

Question 25. The case of incomplete dominance is observed in

  1. Pisum sativum
  2. Drosophila melanogaster
  3. Mirabilis jalapa
  4. All of the above

Answer: 3. Mirabilis jalapa

Question 26. Human males are

  1. Homogametic
  2. Heterogametic
  3. Homozygous
  4. Heterozygous

Answer: 2. Heterogametic

Question 27. Sry is present in human

  1. Y chromosome
  2. X chromosome
  3. Autosome
  4. Both ‘1’ and ‘2’ correct

Answer: 1. Y chromosome

Class 10 Life Science Mcq With Answers

Question 28. In men, sperm contain autosomes and

  1. Both the x and y chromosomes
  2. Either the x or y chromosome
  3. Only y chromosome
  4. Only x chromosome

Answer: 2. Either x or y chromosome

Question 29. If a homozygous dominant red-flowered plant is crossed with a homozygous recessive white-flowered plant, the offspring will be

  1. Half red flowered
  2. Half white flowered
  3. All red flowered
  4. All pink flowered

Answer: 3. All red flowered

Question 28. Independent assortment can be proved by

  1. Back cross
  2. Test cross
  3. Monohybrid cross
  4. Dihybrid cross

Answer: 2. Test cross

Question 29. A cross between black and white birds results in all blue in the F1 generation. Then the cross between bluebirds in the F2 generation would result in

  1. 3 Blue: 1 white
  2. 1 Blue: 1 black: 1 white
  3. 9 Blue : 3 black : 3 white
  4. 1 Black: 1 white: 2 blue

Answer: 3. 9 Blue : 3 black : 3 white

Question 30. The four daughter cells derived from single meiosis differ from each other due to

  1. The difference is chromosome number
  2. Crossing over only
  3. Independent assortment of chromosomes only
  4. Crossing over and independent assortment of chromosomes

Answer: 4. Crossing over and independent assortment of chromosomes

Question 31. The number of distinct traits selected by Mendel in garden peas for his breeding experiments are

  1. 7
  2. 2
  3. 4
  4. 8

Answer: 4. 8

Class 10 Life Science Mcq With Answers

Question 32. When two hybrids undergo crossing in a monohybrid cross, then the percentage of recessive is

  1. 50
  2. 25
  3. 100
  4. 75

Answer: 4. 75

Question 33. If a couple has 5 daughters, the percentage probability of the other child being a girl is

  1. 25
  2. 100
  3. 75
  4. 50

Answer: 1. 25

Objective Type Questions MCQs

Question 1. Which of the following traits in the pea plant is recessive?

  1. Wrinkled seed
  2. Yellow colored seed
  3. Purple colored flower
  4. Axial flower

Answer: wrinkled seed.

Question 2. How many types of gametes are formed from pea plants having the genotype yy rr?

  1. 1
  2. 4
  3. 2
  4. 3

Answer: 4.

Question 3. Which one of the following is the genotypic ratio at the F2 generation of Mendel’s monohybrid cross?

  1. 1:2:1
  2. 3:1
  3. 9:3:3:1
  4. 2:1:2

Answer: 1:2:1

Question 4. What would be the phenotypic ratio in the F2 generation of a monohybrid cross in case of incomplete dominance?

  1. 3:1
  2. 2:1:1
  3. 9:3:3:L
  4. 1:2:1

Answer: 1:2:1

Question 5. Identify which of the following is a dominant trait

  1. Length of the stem – dwarf
  2. The shape of the seed – wrinkled
  3. Color of the cotyledon – yellow
  4. Color of the flower – white

Answer: the color of the cotyledon – yellow

Life Science Class 10 Wbbse Multiple Choice

Question  6. Assess how many types of gametes are produced from the pea plant having the genotype rryy —

  1. One type
  2. Four types
  3. Two types
  4. Three types

Answer: one type

Question 7. Select which of the following two genotypes are responsible for the expression of the phenotype wrinkled yellow in Pea plant

  1. RRYY and rryy
  2. RRYy and RrYy
  3. RRyy and Rryy
  4. rrYY and rrYy

Answer: rrYY and rrYy

Life Science Class 10 Wbbse Multiple Choice

WBBSE Chapter 3 Some Common Genetic Diseases MCQs

Question 1. Genetic Disorders Are

  1. Harmless
  2. Inherited
  3. Contagious
  4. Lethal

Answer: 2. Inherited

Question 2. Haemophilia Is Related To

  1. Blood
  2. Bone
  3. Nerve
  4. Kidney

Answer: 1. Blood

Question 3. Color Blindness Is

  1. Sex-Linked Dominant
  2. Autosomal Dominant
  3. Sex-Linked Recessive
  4. Autosomal Recessive

Answer: 3. Sex-Linked Recessive

Question 4. Thalassemia Is

  1. Infectious
  2. Curable
  3. Environmental
  4. Genetic

Answer: 4. Genetic

Wbbse Class 10 Life Science Mcqs

Question 5. Haemophilia B Is Also Known As

  1. Anaemia
  2. Thalassemia
  3. Christmas Disease
  4. Factor Viii Deficiency

Answer: 3. Christmas Disease

Question 6. The Most Common Type Of Colour Blindness Is

  1. Red-Green
  2. Blue-Yellow
  3. Blue-Green
  4. None Above

Answer: 1. Red-Green

Question 7. The Chromosome Carrying Sex-Linked Gene Is

  1. Autosomes
  2. Y Chromosome
  3. X Chromosome
  4. None Of These

Answer: 3. X Chromosome

Question 8. Holandric Genes Are Ones Situated On

  1. X Chromosome
  2. Y Chromosome
  3. Both A & B
  4. Autosomes

Answer: 2. Y Chromosome

Question 9. A Man Known To Be A Victim Of Haemophilia Mar-Ries A Normal Woman Whose Father Was Known To Be Bleeder; Then It May Be Expected That

  1. All Their Children Would Be Bleeders
  2. Half Of Their Sons Would Be Bleeders
  3. One-fourth of Their Children Would Be Bleed-Ers
  4. All Would Be Normal

Answer: 2. Half Of Their Sons Would Be Bleeders

Wbbse Class 10 Life Science Chapter 3 Solutions

Question 10. Red Green Colour Blindness Is Also Known As

  1. Protanopia
  2. Deuteranopia
  3. Phobia
  4. Both 1&2

Answer: 4. Both 1&2

Question 11. A Colourblind Man, Both Of Whose Parents Had Normal Vision And Whose Paternal And Maternal Grandparents Had Normal Vision, Probably Inher-Ited The Gene For Colourblindness From His

  1. Maternal Or Paternal Grandmother
  2. Maternal Or Paternal Grand Father
  3. Mother
  4. Father

Answer: 3. Mother

Question 12. Daltonism Can Occur In Females Due To

  1. Homozygous Condition In Which Both X chromosomes Are Mutated At The Same Locus
  2. Heterozygous Condition Of X Chromosome
  3. Homozygous Condition Of Y Chromosome
  4. None Of These

Answer: 1. Homozygous Condition In Which Both X chromosomes Are Mutated At The Same Locus

Question 13. The Daughters Born To a Haemophilic Father And Normal Mother Could Be

  1. Normal
  2. Carrier
  3. Haemophilic
  4. All Of These

Answer: 2. Carrier

Question 14. Color Blindness Is Related to a Defect In

  1. Rods
  2. Cones
  3. Eye Muscles
  4. Cornea

Answer: 2. Cones

Question 15. Haemophilia Is A Genetic Disorder In Which

  1. Blood Fails To Coagulate After An Injury
  2. There Is Delayed Coagulation Of the Blood
  3. Blood Clots In Blood Vessels
  4. Blood Cell Count Falls

Answer: 2. There Is Delayed Coagulation Of Blood

Question 16. A Cross Between A Normal Homozygous Woman And A Haemophilic Man Will Result In How Many Sons Having The Above Disease?

  1. 0%
  2. 50%
  3. 75%
  4. 100%

Answer: 1. 0%

Question 17. If You Are Missing One Of The Four Alpha Chain Genes, Then You Are Suffering From Which Type Of Alpha Thalassemia?

  1. Silent Carrier
  2. Alpha Thalassemia Minor
  3. Alpha Thalassemia Major
  4. Haemoglobin H Disease

Answer: 1. Silent Carrier

Wbbse Class 10 Life Science Chapter 3 Solutions

Question 18. Which Type Of Thalassemia Is Also Called Cooley’s Anaemia?

  1. Alpha Thalassemia Major
  2. Beta Thalassemia Major
  3. Beta Thalassemia Minor
  4. Hydrops Fetalis

Answer: 2. Beta Thalassemia Major

Question 19. What Are The Factors That Increase The Risk Of Thalassemia Disease?

  1. Family History
  2. Certain Ancestry
  3. Both 1 & 2
  4. Superstition

Answer: 3. Both 1 & 2

Question 20. A Good Genetic Counsellor Should Have Skills Of

  1. Genetics And Hereditary Disease
  2. Active Listening, Comprehension & Complex Problem Solving
  3. Social Perceptiveness
  4. All Of These

Answer: 4. All Of These

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