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प्रश्न
Chromosomes are mainly made up of ______.
विकल्प
Inheritance
sexual reproduction
asexual reproduction
chromosomes
DNA
RNA
gene
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उत्तर
Chromosomes are mainly made up of DNA.
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
What is the number of chromosomes in the gametes of human beings?
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.
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
Mention whether the following statement is (T) Or (F). Give reason in support of your answer.
The unfertilized human egg has half the number of chromosomes of the body cells.
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
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?
What are chromosomes?
Enumerate the various changes that occur in the nucleus of the cell during prophase.
Differentiate between
Chromatin and Chromosome.
Identify the stages of meiosven below and label them.
Multiple Choice Question:
After mitotic cell division, a female human cell will have
Give Technical Term:
Transmission of characters through generations.
In humans, the sex chromosome complement is
Some of the chromosomes have an elongated knob-like appendages known as telomere.
The sex of the newborn child is a matter of chance and neither of the parents may be considered responsible for it. What would be the possible fusion of gametes to determine the sex of the child?
Generally, the recessive character is expressed only when present in a double recessive condition i.e. homozygous condition. However, a single recessive gene can express itself in human beings when the gene is present on ______
