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SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 chapter 3 - Inheritance and Variation [Latest edition]

Chapters

12th Standard HSC Biology Maharashtra State Board 2021 - Shaalaa.com
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Chapter 3: Inheritance and Variation

MCQVery Short AnswerShort Answer 1Short Answer 2Long Answer
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MCQ

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 Chapter 3 Inheritance and Variation MCQ

1 Marks

MCQ | Q 1

The three principles of Mendelism are

  • Dominance, segregation, and independent assortment

  • Linkage, segregation, and independent assortment

  • Linkage, dominance, and segregation

  • Linkage, dominance, and Independent assortment.

1 Marks

MCQ | Q 2

Which one of the following is back cross?

  • F1 × F1

  • F1 × Recessive parent

  • F1 × Dominant parent

  • F1 × Any parent

1 Marks

MCQ | Q 3

RR (Red) Antirrhinum is crossed with white (WW) one. Offspring (RW) are pink. This is an example of ______.

  • Dominant -recessive

  • Incomplete dominance

  • Hybrid

  • Supplementary genes

1 Marks

MCQ | Q 4

The word chromosome was coined by

  • Benda

  • Waldeyer

  • Robert Hooke

  • T.H.Morgan

1 Marks

MCQ | Q 5

Nullisomy is represented by ______.

  • (2n-1)

  • (2n-2)

  • (2n+1)

  • (2n+2)

1 Marks

MCQ | Q 6

Identify the odd one:-

  • Monoploidy

  • Diploidy

  • Polyploidy

  • Hyperploidy

1 Marks

MCQ | Q 7

In humans, the sex chromosome complement is

  • XX-XY

  • XX-XO

  • ZZ-ZO

  • ZW-ZZ

1 Marks

MCQ | Q 8

A family has five daughters and expecting sixth child. The chance of its beings a son is

  • zero

  • 25%

  • 50%

  • 100%

1 Marks

MCQ | Q 9

In human beings 45 chromosomes/single X/XO abnormality causes ______.

  • Down's syndrome

  • Klinfelter's syndrome

  • Turner's syndrome

  • Edward's syndrome

1 Marks

MCQ | Q 10

Webbed neck is characteristic of ______ syndrome.

  • XXX

  • YY

  • XXY

  • XO

Very Short Answer

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 Chapter 3 Inheritance and Variation Very Short Answer

1 Marks

Very Short Answer | Q 1

Define inheritance.

1 Marks

Very Short Answer | Q 2

What is allelomorph?

1 Marks

Very Short Answer | Q 3

Define the following:

test cross.

1 Marks

Very Short Answer | Q 4

Define euploidy.

1 Marks

Very Short Answer | Q 5

Give an example of complete linkage.

1 Marks

Very Short Answer | Q 6

How many linkage groups are present in Drosophila melanogaster?

1 Marks

Very Short Answer | Q 7

Which genes show straight inheritance?

1 Marks

Very Short Answer | Q 8

How drones are produced in honey bees?

1 Marks

Very Short Answer | Q 9

What is the reason for the 21st trisomy?

1 Marks

Very Short Answer | Q 10

Give the example of X- monosomy you have studied.

Short Answer 1

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 Chapter 3 Inheritance and Variation Short Answer 1

2 Marks

Short Answer 1 | Q 1

Discuss any two points due to which Mendel got success in his experiment?

2 Marks

Short Answer 1 | Q 2

Give any two points of difference between homozygous and heterozygous.

2 Marks

Short Answer 1 | Q 3

Explain test cross with suitable example and state its ratios.

2 Marks

Short Answer 1 | Q 4

Give an account of incomplete dominance with a suitable example.

2 Marks

Short Answer 1 | Q 5

Explain codominance in colour coat in cattle with checker board method.

2 Marks

Short Answer 1 | Q 6

Write an account of the chromosomal theory of inheritance.

2 Marks

Short Answer 1 | Q 7

Write a note on sex linkage.

2 Marks

Short Answer 1 | Q 8

Differentiate between complete and incomplete linkage.

2 Marks

Short Answer 1 | Q 9

Explain the mechanism of sex determination in birds.

2 Marks

Short Answer 1 | Q 10

Give a detail account of thalassemia.

Short Answer 2

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 Chapter 3 Inheritance and Variation Short Answer 2

3 Marks

Short Answer 2 | Q 1

Enlist dominant and recessive characters in pea plant with respect to the position of flower, colour of seed and colour of a pod in tabulated form.

3 Marks

Short Answer 2 | Q 2

Short Answer Question.

Write a note on pleiotropy.

3 Marks

Short Answer 2 | Q 3

Describe the structure of sex chromosomes with the help of labelled diagram.

3 Marks

Short Answer 2 | Q 4

What is autosomal inheritance? Explain different disorders due to autosomal inheritance.

3 Marks

Short Answer 2 | Q 5

Explain the inheritance pattern of colour blindness with a suitable chart.

3 Marks

Short Answer 2 | Q 6

Write a note on bleeder’s disease and its inheritance with a suitable chart.

3 Marks

Short Answer 2 | Q 7

Explain the mechanism of sex determination in humans with a suitable chart.

3 Marks

Short Answer 2 | Q 8

Write a note on Down’s syndrome.

3 Marks

Short Answer 2 | Q 9

What are the different characters that develop due to Klinefelter's syndrome?

3 Marks

Short Answer 2 | Q 10

Give reasons for the development of Turner’s syndrome and also mention its symptoms.

Long Answer

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 Chapter 3 Inheritance and Variation Long Answer

4 Marks

Long Answer | Q 1

Define inheritance. Give statements for various laws of inheritance.

4 Marks

Long Answer | Q 2

Explain intragenic and intergenic interaction with the help of example.

4 Marks

Long Answer | Q 3

Explain the structure of chromosomes with labelled diagram.

4 Marks

Long Answer | Q 4

Give detail account of sex-linked inheritance.

4 Marks

Long Answer | Q 5

Give an account of one Mendelian and one chromosomal disorder you have studied.

Chapter 3: Inheritance and Variation

MCQVery Short AnswerShort Answer 1Short Answer 2Long Answer
12th Standard HSC Biology Maharashtra State Board 2021 - Shaalaa.com

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 chapter 3 - Inheritance and Variation

SCERT Maharashtra Question Bank solutions for 12th Standard HSC Biology Maharashtra State Board 2021 chapter 3 (Inheritance and Variation) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board 12th Standard HSC Biology Maharashtra State Board 2021 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in 12th Standard HSC Biology Maharashtra State Board 2021 chapter 3 Inheritance and Variation are Heredity, Inheritance, Gregor Johann Mendel – Father of Genetics, Mendel’s Laws of Inheritance, Back Cross and Test Cross, Deviations from Mendel’s Findings, Chromosomal Theory of Inheritance, Chromosomes - The Carriers of Heredity, Linkage and Crossing Over, Autosomal Inheritance, Sex Linked Inheritance, Sex Determination, Genetic Disorders, Genes and Genetic.

Using SCERT Maharashtra Question Bank 12th Board Exam solutions Inheritance and Variation exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in SCERT Maharashtra Question Bank Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board 12th Board Exam prefer SCERT Maharashtra Question Bank Textbook Solutions to score more in exam.

Get the free view of chapter 3 Inheritance and Variation 12th Board Exam extra questions for 12th Standard HSC Biology Maharashtra State Board 2021 and can use Shaalaa.com to keep it handy for your exam preparation

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