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Question
In the human male, a sperm contains autosomes and ______.
Options
X and Y chromosomes
Only X chromosome
X or Y chromosome
Only Y chromosome
Solution
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.
RELATED QUESTIONS
The component which is in the nuclei of cells and carries the hereditary characteristics is called ______.
Choose the correct answer:
Chromosomes appear at equator in ____________
Choose the correct answer:
Chromosome is most coiled at (in mitosis) ____________
Choose the correct answer:
Chromosomes number is halved in ____________
Choose the correct answer:
Chromosomes are thin and thread like at __________
What are chromosomes?
State how does meiosis maintains chromosome number in a species.
Draw a duplicate chromosome and label its part.
Explain the Term Leptotene
Explain the Term Chromosomes
Name the following:
Microtubules form the bipolar spindle in which stage.
Give Technical Terms
The phase of meiosis at which homologous chromosomes are separated.
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.
Write the functional activity of the following structure:
Spindle fibers
Complete the following sentence with appropriate word:
The chromosomal theory of inheritance was proposed by ____________in 1902.
Multiple Choice Question
Chromosomal aberrations are caused by:
Match the following.
| 1. Autosomes | - | Trisomy 21 |
| 2. Diploid condition | - | 9 : 3 : 3 : 1 |
| 3. Allosome | - | 22 pair of chromosome |
| 4. Down’s syndrome | - | 2n |
| 5. Dihybrid ratio | - | 23rd pair of 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 ______
The chromosomes are duplicated in ______.
