EASY
Earn 100

Define polyploidy.

Important Questions on Principles of Inheritance and Variation

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Describe various chromosomal disorders found in human beings.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Identify disorders developed in the given genotype and give two symptoms: 44 + XXY.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders

Find the odd one out. Justify your answer.

Down's syndrome, Turner's syndrome, Phenylketonuria, Klinefelter's syndrome

EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
A diploid plant has 14 chromosomes, but its egg cell has 6 chromosomes. Which one of the following is the most likely explanation of this?
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
An abnormal human baby with 'XXX' sex chromosomes was born due to:
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Which of the following most appropriately describes haemophilia?
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
What are the two types of disorders of humans where the karyotype is 47?
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
In the following human pedigree, the filled symbols represents the affected individuals. Identify the type of given pedigree.


Question Image
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Down’s syndrome is represented by
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Describe the various chromosomal disorder genetic diseases.
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
People suffering from albinism cannot synthesize:
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders

Match the Column I with Column II and find the correct answer

  Column - I   Column - II
1 Aneuploidy p Increase in the whole set of chromosomes
2 Monoploidy q Loss or gain of a chromosome
3 Polyploidy r Two sets of chromosome
4 Diploidy s A single set of chromosomes
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Pick out the correct statements:
(i) Haemophilia is a sex-linked recessive disease.
(ii) Down's syndrome is due to aneuploidy.
(iii) Phenylketonuria is an autosomal recessive gene disorder.
(iv) Sickle cell anaemia is an X-linked recessive gene disorder.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
What is Aneuploidy and Polyploidy?
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
A colourblind man marries a woman with normal sight who has no history of colour blindness in her family. What is the probability of their sons being colourblind?
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Match the human disorders shown in Group I with the biochemical processes in Group II. Choose the correct combination.
 
Group I Group II
P. Phenylketonuria i. Melanin synthesis
Q. Albinism ii. Conversion of Phenylalanine to Tyrosine
R. Homocystinuria iii. Tyrosine degradation
S. Argininemia iv. Methionine metabolism
  v. Urea Synthesis
MEDIUM
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
If a colour-blind man marries a woman who is homozygous for normal colour vision, the probability of their son being colour-blind is
HARD
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Identify disorders developed in the given genotype and give two symptoms: 44 + XO.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
State what does aneuploidy lead to.
EASY
Biology>Genetics and Evolution>Principles of Inheritance and Variation>Genetic Disorders
Which one of the following genotype does NOT represent aneuploidy in human being?