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Question
What are chromosomes?
Solution
Chromosomes are highly condensed coiled chromatic fibres made of DNA which carries the hereditary material of the organisms.
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RELATED QUESTIONS
The term “chromosomes” literally means ______.
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
What are genes?
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 correct answer:
Centromere is related to ________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ____________
Label the lettered parts of the given figure and answer the following questions:
(i) What does this diagram represent?
(ii) What is the importance of'd'?
(iii) What are the 'staining' properties of 'b' and 'c'?
(iv) Who gave the term used for this structure today?
(v) What is a?
(vi) Is 'e' present in all chromosomes?
Choose the correct answer:
Chromosome number of man is _____________
What is the importance of meiosis?
Give a reason for the following:
Gametes must be produced by meiosis for sexual reproduction.
Differentiate between
Chromatin and Chromosome.
Identify the stages of meiosven below and label them.
Explain the Term Leptotene
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
Name the following:
Pair of genes responsible for a particular characteristic.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Long answer type question.
Describe the different types of chromosomes.
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'.
Which of the following type of chromosomes has only one telomere?
