Advertisements
Advertisements
प्रश्न
The female gamete/egg cell of a human cell will have ______.
विकल्प
44 +XX chromosomes
44 + XY chromosomes
22 + X chromosomes
22 + Y chromosomes
Advertisements
उत्तर
The female gamete/egg cell of a human cell will have 22 + X chromosomes.
Explanation:
The number of chromosomes in gametes (sex cells) is halved, therefore, a female gamete/egg cell of a human cell has 22 + X chromosomes.
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
What is the difference between chromatin fibre and chromosome?
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.
“First meiotic division is the reduction division” what does the word ‘reduction’ refer to in this statement?
Chromosomes are mainly made up of ______.
Choose the correct answer:
Telocentric chromosomes are _________________
(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.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Chromosomes are the thickest and shortest in telophase.
State the Location: Chromosomes
Write the functional activity of the following structure:
Spindle fibers
Multiple Choice Question
Chromosomal aberrations are caused by:
In humans, the sex chromosome complement is
The centromere is found at the centre of the ______ chromosome.
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'.
Differentiate between X-chromosome and Y-chromosome with reference to –
- length of non-homologous regions
- type as per the position of the centromere
In the human male, a sperm contains autosomes and ______.
