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प्रश्न
In the human male, a sperm contains autosomes and ______.
विकल्प
X and Y chromosomes
Only X chromosome
X or Y chromosome
Only Y chromosome
उत्तर
In the human male, a sperm contains autosomes and X and Y chromosomes.
Explanation:
A sperm in the human male is composed of autosomes and either an X chromosome or a Y chromosome.
संबंधित प्रश्न
Chromosomes get aligned at the centre of the cell during:
A. Metaphase
B. Anaphase
C. Prophase
D. Telophase
Name the following:
The number of chromosomes present in a nerve cell of a human being.
Correct the following statement if there is any mistake:
Genes are specific sequences of bases on a chromosome .
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.
During the pairing of chromosomes in meiosis, the ________ chromosomes come to lie side by side.
Chromosomes are mainly made up of ______.
Choose the correct answer:
Minimum coiling in chromosome is at ______________
Choose the correct answer:
During mitosis which of the following disintegrate ___________
Choose the correct answer:
Minimum coiling in chromosome is at ________________
Give Technical Terms
The stage at which synapsis in chromosomes to form bivalents.
Complete the following sentence with appropriate word :
Polytene chromosomes are found in _________ of fly larvae.
Multiple Choice Question:
The period between two successive mitotic divisions is
Give Reason:
The Law of independent assortment holds good for the gene pairs that occur in different pairs of chromosomes.
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Give the example of X- monosomy you have studied.
The region of the chromosome where the spindle fibres get attached during cell division ______
The centromere is found at the centre of the ______ chromosome.
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 ______
