Home
Class 12
BIOLOGY
Read the following excerpt. On the basis...

Read the following excerpt. On the basis of your reading, answer the given question:
Huntington disease can lead to uncontrolled movements, emotional problems, and loss of thinking ability (cognition). It is a progressive brain disorder caused by a single defective gene on chromosome number 4 - one of the 23 human chromosomes.

Its an autosomal dominant disorder

A

Sex-linked dominant

B

Autosomal recessive

C

Autosomal dominant.

D

Sex-linked recessive

Text Solution

Verified by Experts

The correct Answer is:
B

Huntington disease can lead to uncontrolled movements, emotional problems, and loss of thinking ability (cognition). Its an autosomal dominant disorder and because of that a single copy of the mutated gene is enough to cause the disease.
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 2

    EDUCART PUBLICATION|Exercise SECTION-B|24 Videos
  • SAMPLE PAPER 10

    EDUCART PUBLICATION|Exercise SECTION-C|10 Videos
  • SAMPLE PAPER 3

    EDUCART PUBLICATION|Exercise SECTION - C|12 Videos

Similar Questions

Explore conceptually related problems

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Change in sequence of nucleotide in DNA is known as ...... .

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Which is the main category of mutation ?

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Substitution of a purine with another purine is known as ...... :

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Aneuploidy which occurs due to loss of a complete homologous pair of chromosomes is :

Read the following text and answer the following questions on the basis of the same: Mutation is sudden, discontinuous variation in genotype of an organism due to a change in its chromosomes and genes. Variation in DNA is a result of mutation. It is of three types : Gene mutation, chromosomal aberrations and gametic mutation. Gametic mutation is a change in chromosome number that brings effect on the phenotype, it is of two type - aneuploidy and euploidy. Mutation can be artificially produced by certain agents called mutagen. There are two major types of mutagens: physical and chemical mutagen. Give one word for the following: Type of mutation that arise due to change in a single base pair of DNA.

Read the passage carefully and answer the questions given below. Nationalism is only a curse when it becomes narrow and fanatical Like so many other things available to man, say, religion, it can easily lead men astray. Nationalism can lead people into thinking only of themselves, of thcir own struggles. of their own misery. It can also cause a nation to become suspicious and fearful of its neighbours. to look upon itself as superior, and to become aggressive And it is when nationalism impels a state to become expansionist and seek domination aver others that it becomes a positive curse and harmful intemnationally. Which of the following phrases most correctly suggests the central theme of the passage ?