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प्रश्न
What are genes?
उत्तर
Gene is a structural and functional unit of heredity and variations. Genes are specific sequences
of nucleotides on a chromosome that encode particular proteins which express in the form of
some particular feature of the body. In other words, gene is the DNA segment of the
chromosome and it controls the expression of characteristics
APPEARS IN
संबंधित प्रश्न
The term “chromosomes” literally means ______.
State the difference between:
Chromosome and chromatid:
Choose the correct answer:
In an interphase cell chromosome are as _____________
Choose the correct answer:
If after karyokinesis, cytokinesis does not occur, then result would be _____________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Choose the correct answer:
Chromosomes largely consist of _______________
Identify the stages of meiosven below and label them.
(i) Draw a neat labeled diagram to show the metaphase stage of mitosis in an animal cell having ‘6’ chromosome.
(ii) How many daughter cells are formed at the end of mitosis and at the end of meiosis?
(iii) With reference to cell division explain the following terms:
(Chromatid, Centromere, Haploid).
(iv) Name the type of cell division that occurs during:
1. Growth of shoot 2. Formation of pollen grains.
3. Repair of worn out tissues.
Multiple Choice Question:
How many chromosomes are found in a cell of humans?
Name the following:
The number of chromosomes present in human gametes.
Name the following:
A specific part of a chromosome that determine hereditary characteristics.
Compare X chromosome and Y chromosome.
In humans, the sex chromosome complement is
Explain the structure of chromosomes with labelled diagram.
The number of chromosomes found in human beings is ______.
Some of the chromosomes have an elongated knob-like appendages known as telomere.
Normally, genes occur in a pair of chromosome, but genes of X and Y chromosomes shows different gene loci indicating ______.
The chromosomes are duplicated in ______.
