Which of the following is NOT caused by a gene mutation?

others are example of chromosomal disorders.

Which of the following is a sex-linked disorder?

it is a sex-linked recessive disorder.
The abnormal gene responsible for hemophilia a carried on the X chromosome.

Which of the following is a sex-linked disorder?

it is a sex-linked recessive disorder.
The abnormal gene responsible for hemophilia a carried on the X chromosome.

Which of the following has normal sex chromosomes?

it occurs due to an extra autosome hence, sex chromosomes are not affected.

Which of the following has normal sex chromosomes?

it occurs due to an extra autosome hence, sex chromosomes are not affected.

A pregnant woman who has done an amniocentesis test finds an extra Ban- body in her embryo. The syndrome which is likely to be associated with the embryo is

The presence of an extra barr body due to the presence of an extra X chromosome causes klinefelter's syndrome.

A pregnant woman who has done an amniocentesis test finds an extra Ban- body in her embryo. The syndrome which is likely to be associated with the embryo is

scienceGrade-11

The presence of an extra barr body due to the presence of an extra X chromosome causes klinefelter's syndrome.

Name the scientist who discovered the law of heredity:

gregor mendel discovered the law of heredity.

Name the scientist who discovered the law of heredity:

gregor mendel discovered the law of heredity.

A gamete contains which of the following?

each gamete receives single allele of a gene.

A gamete contains which of the following?

each gamete receives single allele of a gene.

All types of mutations are transferable among generations.

Germ-line mutations occur in gametes which can be inherited while, somatic mutations cannot be inherited.

All types of mutations are transferable among generations.

Germ-line mutations occur in gametes which can be inherited while, somatic mutations cannot be inherited.

Mark the INCORRECT statement about mutation?

mutation is not predestined.
It occurs when DNA is damaged or an error occurs in a DNA.

Mark the INCORRECT statement about mutation?

mutation is not predestined.
It occurs when DNA is damaged or an error occurs in a DNA.

Damage and errors in DNA cause___________.

damage and errors in DNA causes mutation.

Damage and errors in DNA cause___________.

damage and errors in DNA causes mutation.

What is the evolutionary purpose of cells that undergo crossing over?

scienceGrade-10

When does chromosomal crossover occur?

scienceGrade-10

Chromosomal crossover is the natural pairing up and exchanging of genetic material between

scienceGrade-10