Question:
The number of sex chromosomes in humans is
The number of sex chromosomes in humans is
Show Hint
Humans have 2 sex chromosomes (XX in females, XY in males) and 44 autosomes.
Updated On: Nov 5, 2025
- 23
- 2
- 21
- 20
Hide Solution
Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Humans have 46 chromosomes in total, out of which 2 are sex chromosomes (XX for females and XY for males). The remaining 44 chromosomes are autosomes.
Was this answer helpful?
0
0
Top Questions on Genetics
- With the help of the given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in the F3 generation.
- Consider the following statements:
Assertion (A): In human beings, Y-linked genes of non-homologous part are called holandric genes
Reason (R): Y-chromosome is present in males only - If a gene has four alleles, possible number of genotypes are
- Choose the correctly matched pair
- Study the following and choose the correct statements:
I. Haemophilia-A and Haemophilia-B are X-linked disorders due to recessive genes
II. Sickle cell anaemia is caused by a point mutation where valine at 6th position is replaced by glutamic acid
III. Protonopia is red colour blindness
IV. Phenyl ketonuria is an allosomal metabolic genetic disorder
View More Questions
Questions Asked in UP Board X exam
- When did Mahatma Gandhi come back to India?
- UP Board X - 2025
- Nationalism in India
- The altitude of a right-angled triangle is 7 cm less than its base. If the hypotenuse is 13 cm, find the other two sides.
- UP Board X - 2025
- Right-Angled Triangles And Pythagoras Property
- If the sum of first 7 terms of an A.P. is 49 and the sum of first 17 terms is 289, find the sum of first $n$ terms.
- UP Board X - 2025
- Sum of First n Terms of an AP
Find the unknown frequency if 24 is the median of the following frequency distribution:
\[\begin{array}{|c|c|c|c|c|c|} \hline \text{Class-interval} & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 \\ \hline \text{Frequency} & 5 & 25 & 25 & \text{$p$} & 7 \\ \hline \end{array}\]- UP Board X - 2025
- Median of Grouped Data
- If the roots of the equation $x^2+2(m-1)x+(m+5)=0$ are real and equal, find the value of $m$.
- UP Board X - 2025
- Quadratic Equations
View More Questions