Biology
Grade-9
Easy
Question
In a normal human female, how many pairs of autosomes are present?
- 23
- 22
- 21
- 44
Hint:
22
The correct answer is: 22
In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.
Related Questions to study
Biology
Which type of chromosomes are V-shaped?
Which type of chromosomes are V-shaped?
BiologyGrade-9
Biology
Which of the following structural feature of a chromosome is known as ‘primary constriction?’
Which of the following structural feature of a chromosome is known as ‘primary constriction?’
BiologyGrade-9
Biology
The complete set of chromosomes of an individual is known as ___________
The complete set of chromosomes of an individual is known as ___________
BiologyGrade-9
Biology
Which of the following genetic disorder is caused due to the presence of an additional chromosome 21?
Which of the following genetic disorder is caused due to the presence of an additional chromosome 21?
BiologyGrade-9
Biology
If a human cell is identified to have X and Y chromosomes, the person is regarded as __________
If a human cell is identified to have X and Y chromosomes, the person is regarded as __________
BiologyGrade-9
Biology
In a human cell, each chromosome possesses two identical _______
In a human cell, each chromosome possesses two identical _______
BiologyGrade-9
Biology
A normal human cell has _____________ sex chromosomes
A normal human cell has _____________ sex chromosomes
BiologyGrade-9
Biology
Which of the following structural feature is present at the end portion of a chromosome?
Which of the following structural feature is present at the end portion of a chromosome?
BiologyGrade-9
Biology
Which of the following experimental technique is used to identify genetic disorders?
Which of the following experimental technique is used to identify genetic disorders?
BiologyGrade-9
Biology
Which of the following statement is incorrect?
Which of the following statement is incorrect?
BiologyGrade-9
Biology
The diagrammatic representation of karyotype of a species is known as __________
The diagrammatic representation of karyotype of a species is known as __________
BiologyGrade-9
Biology
How many autosomes are present in a normal human cell?
How many autosomes are present in a normal human cell?
BiologyGrade-9
Biology
Identify the correct statement
Identify the correct statement
BiologyGrade-9
Biology
If two interacting alleles are present on the same gene locus then it is called non-allelic gene interactions.
If two interacting alleles are present on the same gene locus then it is called non-allelic gene interactions.
BiologyGrade-10
Biology
Epistasis is an example of inter-genic gene interactions.
Epistasis is an example of inter-genic gene interactions.
BiologyGrade-10
