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प्रश्न
Explain the Term Leptotene
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उत्तर
Leptotene: Th this step the chromosomes become visible as single threads.
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संबंधित प्रश्न
Name the sex chromosomes in human males and females
Correct the following statement if there is any mistake:
If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.
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:
Chromosomes appear at equator in ____________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Synthesis phase in the cell cycle is called so for the synthesis of more of
What is the importance of meiosis in creating variations?
Give Reasons for the following
Chromosomes are the carriers of heredity.
Differentiate between
Chromatin and Chromosome.
Name the following:
The part of the cell associated with heredity.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
State the Location: Polytene chromosome
Write the functional activity of the following structure:
Chromosome
Name the following:
The diploid number for cell of man.
Long answer type question.
Describe the different types of chromosomes.
Define euploidy.
The region of the chromosome where the spindle fibres get attached during cell division ______
The thin thread-like structures found in the nucleus of each cell are called ______.
______ is a sudden permanent heritable change that can occur in the gene, in the chromosome or chromosome number.
