MCQ
Chromosome complement with 2n − 1 is called as
- AMonosomy
- BNullisomy
- CTrisomy
- DTetrasomy
✓
Answer
- Monosomy
Explanation:
Monosomy is absence of a single chromosome from a diploid cell (2n - 1). Nullisomy is absence of one complete pair of homologous chromosomes (2n - 2). Presence of one chromosome four times is called tetrasomy (2n + 2). A diploid cell with an extra chromosome is trisomic (2n + 1).
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
When more than one adaptive radiations appeared to have occurred in an isolated geographical area, it is called
In humans, at the end of the first meiotic division, the male germ cells differentiate into:
Which of the following help in repairing of DNA?
Identify the type of ovary in diagram
A naturally occurring coding strand composed of alternating C and U residues would result in the formation of polypeptide containing:
Arrange them on the basis of increasing size:
What determines the limits of a biome:
Consider the statements given below regarding contraception and answer as directed there after:
→$(1)$ Medical termination of pregency $(MTP)$ during first trimester is generally safe
$(2)$ Generally chances of conception are nil until mother breast-feeds the infant upto two years
$(3)$ Intrauterine devices like copper$-T$ are effective contraceptives
$(4)$ Contraception pills may be taken upto one week after coitus to prevent conception Which two of the above statements are correct?
Which out of the these have Culex mosquito as their vector?
Plant in which chromosomal basis of sex determination was discovered first is ?