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Frank Frank Class 10 Biology Part 2

Frank Class 10 Biology Part 2 - Shaalaa.com

Chapter 3: Principles of Genetics

Exercise

Chapter 3: Principles of Genetics Exercise Exercise solutions [Pages 20 - 36]

Exercise | Q 1 | Page 35
Who was the 'Father of Genetics'?
Exercise | Q 2 | Page 35
What is Genetics?
Exercise | Q 3 | Page 35
What is heredity?
Exercise | Q 4 | Page 20
In which cross is 3:1 ratio obtained?
Exercise | Q 5 | Page 20
What is the dihybrid cross ratio?
Exercise | Q 6 | Page 35
Which seven characters did Mendel use for his experiments?
Exercise | Q 7.01 | Page 35

Define the following:

Genotype

Exercise | Q 7.02 | Page 35

Define the following:

Phenotype

Exercise | Q 7.03 | Page 35

Define the following:

Homozygous

Exercise | Q 7.04 | Page 35

Define the following:

Heterozygous

Exercise | Q 7.05 | Page 35

Define the following:

Allele

Exercise | Q 7.06 | Page 35

Define the following:

Dominant

Exercise | Q 7.07 | Page 35

Define the following:

Recessive

Exercise | Q 8 | Page 35
Who was Mendel?
Exercise | Q 9 | Page 36
How is sex of zygote determined in humans?
Exercise | Q 9 | Page 35
Name Mendel's laws.
Exercise | Q 10 | Page 35
What do you understand by monohybrid cross?
Exercise | Q 10 | Page 36
What do you understand by sex-linked inheritance?
Exercise | Q 11 | Page 35
Explain dihybrid cross.
Exercise | Q 12 | Page 35
What do you infer from the law of segregation?
Exercise | Q 13 | Page 35
Why is the law of segregation called law of purity of gametes?
Exercise | Q 14 | Page 35
Elucidate "Law of independent Assortment". Explain how Mendel achieved it.

Chapter 3: Principles of Genetics Exercise Exercise solutions [Page 36]

Exercise | Q 1 | Page 36
How are Mendel's laws important?
Exercise | Q 2 | Page 36
Give three exceptions to Mendel's laws.
Exercise | Q 3 | Page 36
On which plant Mendel performed his experiments?
Exercise | Q 4 | Page 36
What determines the sex of a child in humans?
Exercise | Q 5.01 | Page 36

Predict the genotype and phenotype of the following cross in pea.

TT x Tt

(Capital letters show dominance)

Exercise | Q 5.02 | Page 36

Predict the genotype and phenotype of the following cross in pea.

tt x TT

(Capital letters show dominance)

Exercise | Q 5.03 | Page 36

Predict the genotype and phenotype of the following cross in pea.

TTrr x ttRR

(Capital letters show dominance)

Exercise | Q 5.04 | Page 36

Predict the genotype and phenotype of the following cross in pea.

TtRr x TtRr

(Capital letters show dominance)

Exercise | Q 5.05 | Page 36

Give the ratio of phenotype of these crosses.

Exercise | Q 5.06 | Page 36

Mention whether the cross is a monohybrid or dihybrid.

Exercise | Q 6 | Page 36
Note down the allele pairs studied by Mendel. Mention which allele is dominant.
Exercise | Q 7 | Page 36
How did Mendel's work come to light?
Exercise | Q 8.01 | Page 36

Define the following:
Autosomes

Exercise | Q 8.02 | Page 36

Define the following:
Sex chromosomes

Exercise | Q 8.03 | Page 36

Define the following:
Sex-linked characters

Exercise | Q 11 | Page 36
What do you know about haemophilia?
Exercise | Q 12 | Page 36
What is colour blindness?
Exercise | Q 13 | Page 36
What is the cause of haemophilia and colour blindness?
Exercise | Q 14 | Page 36
Why do you think that more males are affected by sex-linked diseases?
Exercise | Q 15 | Page 36
Why can't a man transfer a sex linked disease directly to his son?
Exercise | Q 16 | Page 36

A woman has normal vision but her father was colour blind. If she is married to a colour blind person, report on the occurrence of the disease in the progeny.

Exercise | Q 17 | Page 36
What is the other name of Bleeder's disease?
Exercise | Q 18 | Page 36
What is sex-linked inheritance?
Exercise | Q 19 | Page 36

Suppose you are given two pairs of contrasting characters: Seed colour → yellow and green , seed coat → round and wrinkled.

Fill in the following table to show that F2 generation according to the principle of independant assortment as given by Mendel.

Selfing among hybrids of F1  RY Ry rY ry
RY        
Ry        
rY        
Ry        
F2 generation        
Exercise | Q 19.1 | Page 36

State Mendel's law of dominance.

Exercise | Q 20.1 | Page 36

Answer the following briefly:

Explain with the help of a chart what will be the colour of a child's hair if father has got dominant gene for black hair and mother has recessive gene for brown hair?

Exercise | Q 20.2 | Page 36

Explain the following terms:

Laws of Inheritance

Exercise | Q 20.3 | Page 36

Explain the following terms:

Identical twins

Exercise | Q 20.4 | Page 36

Define the term heredity.

Chapter 3: Principles of Genetics Exercise Exercise solutions [Page 37]

Exercise | Q 1 | Page 37

A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness . 

(i) Who is colour blind in parents - Father or Mother?
(ii) How many daughters and sons have beeen born in the family?
(iii) What does the child 1 indicate about this trait?
(iv) Complete the depiction of all probabilities of the trait among the children 2-5 in the chart.
(v) On which chromosome is the gene of this trait located?
(vi) Name one other trait in humans which follows the similar mode of inheritance.

Exercise | Q 2.01 | Page 37

Choose the correct answer:

Mendel conducted his hybridization experiments on _______

  • potato

  • garden pea

  • cow pea

  •  pigeon pea

Exercise | Q 2.02 | Page 37

Choose the correct answer:

If a homozygous tall plant is crossed with a heterozygous tall plant, the proportion of tall progeny would be ____________

  • 25%

  •  50%

  • 75% 

  • 100%

Exercise | Q 2.03 | Page 37

Choose the correct answer:

Mendel used ______ pairs of a characters for his experiments.

  • 5

  • 6

  • 7

  • 4

Exercise | Q 2.04 | Page 37

Choose the correct answer:

Father of genetics ________

  • Darwin 

  • Pasteur 

  • Lamarck 

  • Mendel

Exercise | Q 2.05 | Page 37

Choose the correct answer:

The allele which masks the effect of its complement is _______

  • dominant

  • recessive

  • monohybrid

  • dihybrid

Exercise | Q 2.06 | Page 37

Choose the correct answer:

If any of Mendel's characters were linked; one would have been unable to derive.

  • Law of Dominance

  • Law of Segregation

  • Law of Independent Assortment

  •  None of these

Exercise | Q 2.07 | Page 37

Choose the correct answer:

The contrasting characters used by Mendel are called _____

  • alleles

  • heteromorphs

  • genes

  •  none of the above

Exercise | Q 2.08 | Page 37

Choose the correct answer:

If a pea plant with round seeds is selfed and the offspring are in the ratio 3:1, then the plant is _________

  • homozygous

  • heterozygous

  • both

  • none of these

Exercise | Q 2.09 | Page 37

Choose the correct answer:

A cross where two pairs of alleles are considered is a ____________

  • dihybrid cross

  • monohybrid cross

  • polyhybrid cross

  • test cross

Exercise | Q 2.1 | Page 37

Choose the correct answer:

Mendel was born in __________

  • Czechoslovakia

  • Austria

  • England

  • Portugal

Exercise | Q 2.11 | Page 37

Choose the correct answer :
Human sex chromosomes are __________

  • X and O

  • Y and O

  • X and Y

  • none of these

Exercise | Q 2.12 | Page 37

Choose the correct answer:

Haemophilia is due to recessive gene on __________

  • X chromosome

  • Y chromosome

  • autosome

  • none of these

Exercise | Q 2.13 | Page 37

Choose the correct answer:

Chromosomes identical in male and female are called __________

  • sex chromosomes

  • autosomes

  • heterosomes

  • dominant

Exercise | Q 2.14 | Page 37

Choose the correct answer:

Males have more chances of suffering from sex-linked disease because of ___________

  • one Y chromosome

  • one X chromosome

  • autosomes

  • none of these

Exercise | Q 2.15 | Page 37

Choose the correct answer:

A single recessive trait, able to express must be on _________

  • Y chromosome

  • X chromosomes in male

  • X chromosome in female

  • autosome

Exercise | Q 2.16 | Page 37

Choose the correct answer:

A carrier haemophilic woman marries a haemophilic man. What are the chances for her progeny to be haemophilic?

  • 25% 

  • 75% 

  • 50%

  • 100%

Exercise | Q 2.17 | Page 37

Choose the correct answer:

 A colour blind woman marries a normal man, in the progeny _________

  • one son and one daughter are normal

  • sons are colour blind and daughters are normal

  • sons are colour blind and daughters are carriers

  • none of these

Exercise | Q 2.18 | Page 37

Choose the correct answer:

A man can transfer his sex-linked gene to his ______________

  • son 

  • daughter 

  • both 

  • none of these

Chapter 3: Principles of Genetics

Exercise

Frank Frank Class 10 Biology Part 2

Frank Class 10 Biology Part 2 - Shaalaa.com

Frank solutions for Class 10 Biology chapter 3 - Principles of Genetics

Frank solutions for Class 10 Biology chapter 3 (Principles of Genetics) 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 CISCE Frank Class 10 Biology Part 2 solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Frank textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 10 Biology chapter 3 Principles of Genetics are Genetics: Mendel’s Laws of Inheritance, Genetics: - Sex Linked Inheritance of Diseases, Sex Determination in Humans, The Three Laws of Mendel, Monohybrid Cross, Dihybrid Cross, Introduction to Genetic Terms.

Using Frank Class 10 solutions Principles of Genetics 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 Frank Solutions are important questions that can be asked in the final exam. Maximum students of CISCE Class 10 prefer Frank Textbook Solutions to score more in exam.

Get the free view of chapter 3 Principles of Genetics Class 10 extra questions for Biology and can use Shaalaa.com to keep it handy for your exam preparation

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