Advertisements
Advertisements
Question
Define the following term:
Chromosome
Solution
The nucleus contains most of the cell's DNA, which is organised into discrete units called chromosomes.
RELATED QUESTIONS
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.
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Choose the correct answer:
The term 'chromosome' was coined by ___________
Synthesis phase in the cell cycle is called so for the synthesis of more of
Give Reasons for the following
Chromosomes are the carriers of heredity.
Explain the Term Zygotene
Give Technical Terms
The stage at which chromosomes occurs reach the opposite poles.
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
Name the following:
Pairs of chromosomes, present in human egg cells.
Name the following:
Pair of genes responsible for a particular characteristic.
Give Technical Term:
Transmission of characters through generations.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Complete the following sentence with appropriate word:
The number of chromosomes in humans is ________.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with a suitable idea given in Column ‘I’.
| Column I | Column II |
| Genetics | Chromosomes are similar in size and shape. |
| Autosomes | The alternative forms of a gene. |
| Recessive gene | Study of laws of inheritance of characters |
| Allele | A gene that can express only when in a similar pair. |
| Homologous chromosomes | Chromosomes are other than the pair of sex chromosomes. |
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?
In the human male, a sperm contains autosomes and ______.
Rewrite the correct form of the statement by changing the first or last word only:
Duplicated chromosomes remain attached at a point termed as centrosome.
