Tamil Nadu Board of Secondary EducationHSC Science Class 12

Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Zoology Answers Guide chapter 4 - Principles of Inheritance and Variation [Latest edition]

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Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Zoology Answers Guide chapter 4 - Principles of Inheritance and Variation - Shaalaa.com
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Solutions for Chapter 4: Principles of Inheritance and Variation

Below listed, you can find solutions for Chapter 4 of Tamil Nadu Board of Secondary Education Tamil Nadu Board Samacheer Kalvi for Class 12th Zoology Answers Guide.


Evaluation
Evaluation [Pages 57 - 59]

Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Zoology Answers Guide Chapter 4 Principles of Inheritance and Variation Evaluation [Pages 57 - 59]

Evaluation | Q 1. | Page 57

Haemophilia is more common in males because it is a ____________.

  • Recessive character carried by Y-chromosome

  • Dominant character carried by Y-chromosome

  • Dominant trait carried by X-chromosome

  • Recessive trait carried by X- chromosome

Evaluation | Q 2. | Page 57

ABO blood group in man is controlled by ____________.

  • Multiple alleles

  • Lethal genes

  • Sex linked genes

  • Y-linked genes

Evaluation | Q 3. | Page 57

Three children of a family have blood groups A, AB and B. What could be the genotypes of their parents?

  • IA IB and Io Io

  • IA Io and IB Io

  • IB IB and IA IA

  • IA IA and Io Io

Evaluation | Q 4. | Page 57

Which of the following is not correct?

  • Three or more alleles of a trait in the population are called multiple alleles.

  • A normal gene undergoes mutations to form many alleles.

  • Multiple alleles map at different loci of a chromosome.

  • A diploid organism has only two alleles out of many in the population.

Evaluation | Q 5. | Page 57

Which of the following phenotypes in the progeny are possible from the parental combination AxB?

  • A and B only

  • A, B and AB only

  • AB only

  • A, B, AB and O

Evaluation | Q 6. | Page 57

Which of the following phenotypes is not possible in the progeny of the parental genotypic combination IA IO x IA IB?

  • AB

  • O

  • A

  • B

Evaluation | Q 7. | Page 57

Which of the following is true about the Rh factor in the offspring of a parental combination DdxDd (both Rh-positive)?

  • All will be Rh-positive

  • Half will be Rh positive

  • About ¾ will be Rh negative

  • About one fourth will be Rh negative

Evaluation | Q 8. | Page 57

What can be the blood group of offspring when both parents have AB blood group?

  • AB only

  • A, B and AB

  • A, B, AB and O

  • A and B only

Evaluation | Q 9. | Page 58

If the childs blood group is ‘O’ and fathers blood group is ‘A’ and mother’s blood group is ‘B’ the genotype of the parents will be ____________.

  • IA IA and IB Io

  • IA Io and IB Io

  • IA Io and Io Io

  • Io Io and IB IB

Evaluation | Q 10. | Page 58

XO type of sex determination and XY type of sex determination are examples of ____________.

  • Male heterogamety

  • Female heterogamety

  • Male homogamety

  • Both Female heterogamety and Male homogamety

Evaluation | Q 11. | Page 58

In an accident there is great loss of blood and there is no time to analyse the blood group which blood can be safely transferred?

  • O and Rh negative

  • O and Rh positive

  • B and Rh negative

  • AB and Rh positive

Evaluation | Q 12. | Page 58

Father of a child is colourblind and mother is carrier for colourblindness, the probability of the child being colourblind is ____________.

  • 25%

  • 50%

  • 100%

  • 75%

Evaluation | Q 13. | Page 58

A marriage between a colourblind man and a normal woman produces ____________.

  • All carrier daughters and normal sons

  • 50% carrier daughters and 50% normal daughters

  • 50% colourblind sons and 50% normal sons

  • All carrier offsprings

Evaluation | Q 14. | Page 58

Mangolism is a genetic disorder which is caused by the presence of an extra chromosome number ____________.

  • 20

  • 21

  • 4

  • 23

Evaluation | Q 15. | Page 58

Klinefelters’ syndrome is characterized by a karyotype of ____________.

  • XYY

  • XO

  • XXX

  • XXY

Evaluation | Q 16. | Page 58

Females with Turners’ syndrome have

  • Small uterus

  • Rudimentary ovaries

  • Underdeveloped breasts

  • All of these

Evaluation | Q 17. | Page 58

Pataus’ syndrome is also referred to as ____________.

  • 13-Trisomy

  • 18-Trisomy

  • 21-Trisomy

  • None of these

Evaluation | Q 18. | Page 58

Who is the founder of Modern Eugenics movement?

  • Mendel

  • Darwin

  • Francis Galton

  • Karl Pearson

Evaluation | Q 19. | Page 58

Improvement of human race by encouraging the healthy persons to marry early and produce large number of children is called ____________.

  • Positive eugenics

  • Negative eugenics

  • Positive euthenics

  • Positive euphenics

Evaluation | Q 20. | Page 58

The ____________ deals with the control of several inherited human diseases especially inborn errors of metabolism.

  • Euphenics

  • Eugenics

  • Euthenics

  • All of these

Evaluation | Q 21. | Page 58

“Universal Donor” and “Universal Recipients” blood group are ______ and _______ respectively.

  • AB, O

  • O, AB

  • A, B

  • B, A

Evaluation | Q 22. | Page 58

ZW-ZZ system of sex determination occurs in

  • Fishes

  • Reptiles

  • Birds

  • All of these

Evaluation | Q 23. | Page 58

Co-dominant blood group is ____________.

  • A

  • AB

  • B

  • O

Evaluation | Q 24. | Page 58

Which of the following is incorrect regarding ZW-ZZ type of sex determination?

  • It occurs in birds and some reptiles

  • Females are homogametic and males are heterogametic

  • Male produce two types of gametes

  • It occurs in gypsy moth

Evaluation | Q 25. | Page 59

What is haplodiploidy?

Evaluation | Q 26. | Page 59

Distinguish between heterogametic and homogametic sex determination systems.

Evaluation | Q 27. | Page 59

What is Lyonisation?

Evaluation | Q 28. | Page 59

What is criss-cross inheritance?

Evaluation | Q 29. | Page 59

Why are sex linked recessive characters more common in the male human beings?

Evaluation | Q 30. | Page 59

What are holandric genes?

Evaluation | Q 31. | Page 59

Mention the symptoms of Phenylketonuria.

Evaluation | Q 32. | Page 59

Mention the symptoms of Down's syndrome.

Evaluation | Q 33. | Page 59

Differentiate Intersexes from Supersexes.

Evaluation | Q 34. | Page 59

Explain the genetic basis of ABO blood grouping in man.

Evaluation | Q 35. | Page 59

Answer the following question:
How is sex determined in human beings? Explain with the help of a diagram. 

Evaluation | Q 36. | Page 59

What is male heterogamety?

Evaluation | Q 37. | Page 59

Brief about female heterogamety.

Evaluation | Q 38. | Page 59

Give an account of the genetic control of the Rh factor. 

Evaluation | Q 39. | Page 59

Explain the mode of sex determination in honeybees.

Evaluation | Q 40. | Page 59

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

Evaluation | Q 41. | Page 59

What are the applications of Karyotyping?

Evaluation | Q 42. | Page 59

Explain the inheritance of sex-linked characters in human being.

Evaluation | Q 43. | Page 59

What is extra chromosomal inheritance?

Evaluation | Q 44. | Page 59

Comment on the methods of Eugenics.

Solutions for Chapter 4: Principles of Inheritance and Variation

Evaluation
Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Zoology Answers Guide chapter 4 - Principles of Inheritance and Variation - Shaalaa.com

Tamil Nadu Board Samacheer Kalvi solutions for Class 12th Zoology Answers Guide chapter 4 - Principles of Inheritance and Variation

Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Class 12th Zoology Answers Guide Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Tamil Nadu Board Samacheer Kalvi solutions for Mathematics Class 12th Zoology Answers Guide Tamil Nadu Board of Secondary Education 4 (Principles of Inheritance and Variation) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.

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Concepts covered in Class 12th Zoology Answers Guide chapter 4 Principles of Inheritance and Variation are Multiple Alleles, Human Blood Groups, Genetic Control of Rh Factor, Sex Determination, Sex Linked Inheritance, Karyotyping, Pedigree Analysis, Genetic Disorders, Chromosomal Abnormalities, Extra Chromosomal / Cytoplasmic Inheritance, Eugenics, Euphenics and Euthenics.

Using Tamil Nadu Board Samacheer Kalvi Class 12th Zoology Answers Guide solutions Principles of Inheritance 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 Tamil Nadu Board Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Class 12th Zoology Answers Guide students prefer Tamil Nadu Board Samacheer Kalvi Textbook Solutions to score more in exams.

Get the free view of Chapter 4, Principles of Inheritance and Variation Class 12th Zoology Answers Guide additional questions for Mathematics Class 12th Zoology Answers Guide Tamil Nadu Board of Secondary Education, and you can use Shaalaa.com to keep it handy for your exam preparation.

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