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Question
Choose the correct answer:
Chromosomes number is halved in ____________
Options
meiosis I
meiosis II
mitosis
amitosis
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Solution
Chromosomes number is halved in meiosis I
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RELATED QUESTIONS
What is the number of chromosomes in the gametes of human beings?
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
Given below is a schematic diagram of a portion of DNA.
- How many strands are shown in the diagram?
- How many nucleotides have been shown in each strand?
- Name the parts numbered 1, 2, 3, 4 and 5 respectively.
- Name the DNA unit constituted by the parts 1, 2, 3 collectively.
Choose the best option out of the four alternatives a, b, c and d
Question 1:
The number of chromosomes in a certain type of cell division is halved. This kind of cell
division occurs in.
(a) Only testis
(b) Only ovary
(c) Both ovary and testis
(d) All body cells
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Chromosomes are mainly made up of ______.
Choose the correct answer:
Chromosomes largely consist of _______________
Choose the correct answer:
Sex of an individual is determined by ____________
What is the importance of meiosis?
Write the functional activity of the following structure:
Chromosome
Give Reason:
The Law of independent assortment holds good for the gene pairs that occur in different pairs of chromosomes.
Name the following:
Pairs of chromosomes, present in human egg cells.
Explain the structure of chromosomes with labelled diagram.
The region of the chromosome where the spindle fibres get attached during cell division ______
An inheritable change in the amount or the structure of a gene or a chromosome is called ______.
Read the following statements and select the correct option.
Statement I: The densely packed transcriptionally active, light staining region of chromatin is known as 'Heterochromatin'.
Statement II: The loosely packed, dark staining transcriptionally inactive region of chromatin is known as 'Euchromatin'.
The two non-sister chromatids of a paired chromosome are attached to each other at ______ during the process of crossing over.
Given below is a set of four term. Choose the odd one and write the category of the remaining term:
In the human male, a sperm contains autosomes and ______.
