CUET PYQs for Genetics with Solutions: Practice CUET Previous Year Questions

Mendelian Disorders
Read the following passage carefully and answer the given questions.
Genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in a single gene. These disorders are transmitted to the offspring on the same lines as in the principle of inheritance. The pattern of inheritance of such Mendelian disorders can be traced in a family by pedigree analysis. Most common and prevalent Mendelian disorders are Haemophilia, Cystic fibrosis, Sickle-cell anaemia, Colour blindness, Phenylketonuria, Thalassemia, etc. The Mendelian disorders may be dominant or recessive. By pedigree analysis, one can easily understand whether the trait in question is dominant or recessive. Similarly, the trait may also be linked to the sex chromosome or an autosome.

\(\alpha\)-thalassemia is controlled by the genes:

Which one of the following options will express intermediate skin colour in an individual?

Which of the following are correct regarding Lamarck's theory?
(A) He emphasized accumulative inheritance of acquired characters.
(B) His work was published as "On the origin of Species"
(C) Lamarckism is criticized because neuter worker bees and wasps cannot transmit acquired changes.
(D) Organs are modified, or new rudimentary organs are formed due to use and disuse.
Choose the correct answer from the options given below:

Mendelian Disorders
Read the following passage carefully and answer the given questions.
Genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in a single gene. These disorders are transmitted to the offspring on the same lines as in the principle of inheritance. The pattern of inheritance of such Mendelian disorders can be traced in a family by pedigree analysis. Most common and prevalent Mendelian disorders are Haemophilia, Cystic fibrosis, Sickle-cell anaemia, Colour blindness, Phenylketonuria, Thalassemia, etc. The Mendelian disorders may be dominant or recessive. By pedigree analysis, one can easily understand whether the trait in question is dominant or recessive. Similarly, the trait may also be linked to the sex chromosome or an autosome.

Which one of the followings is an example of an inborn error of metabolism and inherited as autosomal recessive trait?

Mendelian Disorders
Read the following passage carefully and answer the given questions.
Genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in a single gene. These disorders are transmitted to the offspring on the same lines as in the principle of inheritance. The pattern of inheritance of such Mendelian disorders can be traced in a family by pedigree analysis. Most common and prevalent Mendelian disorders are Haemophilia, Cystic fibrosis, Sickle-cell anaemia, Colour blindness, Phenylketonuria, Thalassemia, etc. The Mendelian disorders may be dominant or recessive. By pedigree analysis, one can easily understand whether the trait in question is dominant or recessive. Similarly, the trait may also be linked to the sex chromosome or an autosome.

Failure of segregation of chromatids during cell division results in:

"Survival of the Fittest" is associated with which of the following?

Which of the following statements are true about Mutation?
(A) Mutation is the only factor responsible for changing gene frequency in a population.
(B) Mutations can be at the gene level or at the chromosomal level.
(C) Radiations are not the only factor responsible for mutations.
(D) Substances that increase the rate of mutation are called mutagens.
Choose the correct answer from the options given below:

Which of the following disorders are the results of aneuploidy? (A) Haemophilia
(B) Down’s Syndrome
(C) Thalassemia
(D) Turner’s Syndrome

Mendelian Disorders
Read the following passage carefully and answer the given questions.
Genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in a single gene. These disorders are transmitted to the offspring on the same lines as in the principle of inheritance. The pattern of inheritance of such Mendelian disorders can be traced in a family by pedigree analysis. Most common and prevalent Mendelian disorders are Haemophilia, Cystic fibrosis, Sickle-cell anaemia, Colour blindness, Phenylketonuria, Thalassemia, etc. The Mendelian disorders may be dominant or recessive. By pedigree analysis, one can easily understand whether the trait in question is dominant or recessive. Similarly, the trait may also be linked to the sex chromosome or an autosome.

Which one of the following diseases is an autosomal dominant disorder?

Match List I with List II \[ \begin{array}{|l|l|} \hline \textbf{List I} & \textbf{List II} \\ \hline (A) \; \text{Flower Colour} & (I) \; \text{Green} \\ \hline (B) \; \text{Seed colour} & (II) \; \text{Yellow} \\ \hline (C) \; \text{Pod colour} & (III) \; \text{Constricted} \\ \hline (D) \; \text{Pod shape} & (IV) \; \text{White} \\ \hline \end{array} \]

Arrange the given steps involved in gel electrophoresis used for separation of DNA fragments?
(A) Exposure to UV light
(B) Staining with ethidium bromide
(C) Moving of DNA fragments towards anode
(D) Elution

Mendelian Disorders
Read the following passage carefully and answer the given questions.
Genetic disorders may be grouped into two categories - Mendelian disorders and Chromosomal disorders. Mendelian disorders are mainly determined by alteration or mutation in a single gene. These disorders are transmitted to the offspring on the same lines as in the principle of inheritance. The pattern of inheritance of such Mendelian disorders can be traced in a family by pedigree analysis. Most common and prevalent Mendelian disorders are Haemophilia, Cystic fibrosis, Sickle-cell anaemia, Colour blindness, Phenylketonuria, Thalassemia, etc. The Mendelian disorders may be dominant or recessive. By pedigree analysis, one can easily understand whether the trait in question is dominant or recessive. Similarly, the trait may also be linked to the sex chromosome or an autosome.

Which one of the following substitutions is a cause of sickle-cell anaemia?

Read the following statements carefully regarding scientists and their contributions in genetics.
• [(P)] Mendel proposed the law of segregation.
• [(Q)] Sutton and Boveri proposed chromosomal theory of inheritance.
• [(R)] T.H. Morgan experimentally proved linkage in Drosophila.
• [(S)] Hershey and Chase proved that proteins are genetic material. Choose the correct option.

EcoRI, a significant tool in rDNA technology is -

Match List-I with List-II \[ \begin{array}{|l|l|} \hline \text{List-I} & \text{List-II} \\ \hline (A) \; i & (I) \; \text{Permease} \\ \hline (B) \; z & (II) \; \text{Repressor} \\ \hline (C) \; y & (III) \; \text{Transacetylase} \\ \hline (D) \; a & (IV) \; \beta\text{-Galactosidase} \\ \hline \end{array} \]