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Chapters
2: Work and Energy
3: Current Electricity
4: Measurement of Matter
5: Acids, Bases and Salts
6: Classification of Plants
7: Energy Flow in an Ecosystem
8: Useful and Harmful Microbes
9: Environmental Management
10: Information Communication Technology (ICT)
11: Reflection of Light
12: Study of Sound
13: Carbon: An important element
14: Substances in Common Use
15: Life Processes in Living Organisms
▶ 16: Heredity and Variation
17: Introduction to Biotechnology
18: Observing Space: Telescopes
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Solutions for Chapter 16: Heredity and Variation
Below listed, you can find solutions for Chapter 16 of Maharashtra State Board Balbharati for Science and Technology [English] 9 Standard Maharashtra State Board.
Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board 16 Heredity and Variation Exercise [Page 193]
Hereditary characters are transferred from parents to offspring by ______ hence they are said to be structural and functional units of heredity.
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
Organisms produced by ______ show minor variations.
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
Chromosomes are mainly made up of ______.
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
Organisms produced through ______ show major variations.
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
Explain following.
Explain Mendel’s monohybrid progeny with the help of any one cross.
Explain Mendel’s dihybrid ratio with the help of any one cross.
Distinguish between monohybrid and dihybrid cross.
Is it right to avoid living with a person suffering from a genetic disorder? Explain.
Answer the following question in your own words.
What is meant by ‘chromosome’?
Explain the types of chromosomes.
Answer the following question in your own words.
Describe the structure of the DNA molecule.
Answer the following question in your own words.
Express your opinion about the use of DNA fingerprinting.
Answer the following question in your own words.
Explain the structure, function and types of RNA.
Answer the following question in your own words.
Why is it necessary for people to have their blood examined before marriage?
Write a brief note.
Down syndrome
Write a brief note.
Monogenic disorders
Write a brief note.
Sickle cell anaemia: symptoms and treatment
How are the items in groups A, B and C interrelated?
| A | B | C |
| Leber hereditary optic neuropathy | 44 + XXY | Pale skin, white hairs |
| Diabetes | 45 + X | Men are sterile. |
| Albinism | Mitochondrial disorder | Women are sterile. |
| Turner syndrome | Polygenic disorder | This disorder arises during development of zygote. |
| Klinefelter syndrome | Monogenic disorder | Effect on blood glucose level. |
Filling the blank based on the given relationship.
44 + X : Turner syndrome : : 44 + XXY : ______
Filling the blank based on the given relationship.
3 : 1 Monohybrid : : 9 : 3 : 3 : 1 : ______
Filling the blank based on the given relationship.
Women : Turner syndrome : : Men : ______
Complete the tree diagram below based on the types of hereditary disorders.
Solutions for 16: Heredity and Variation
Balbharati solutions for Science and Technology [English] 9 Standard Maharashtra State Board chapter 16 - Heredity and Variation
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Concepts covered in Science and Technology [English] 9 Standard Maharashtra State Board chapter 16 Heredity and Variation are Types of Chromosomes, Deoxyribonucleic Acid (DNA) and Its Structure, Ribonucleic acid (RNA), Heredity or Inheritance, Inherited Traits and Expression of Traits, Mendelian Inheritance - Mendel’s Law of Heredity, Chromosomes - The Carriers of Heredity, Monohybrid Cross, Dihybrid Cross, Disorders Due to Chromosomal Abnormalities, Diseases Occuring Due to Mutation in Single Gene (Monogenic Disorders), Mitochondrial Disorder, Disorders Due to Mutations in Multiple Genes : (Polygenic Disorders), Gregor Johann Mendel – Father of Genetics, Genetic Disorders.
Using Balbharati Science and Technology [English] 9 Standard Maharashtra State Board solutions Heredity and Variation exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Balbharati Solutions are essential questions that can be asked in the final exam. Maximum Maharashtra State Board Science and Technology [English] 9 Standard Maharashtra State Board students prefer Balbharati Textbook Solutions to score more in exams.
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