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Question
Choose the correct answer:
Chromosomes number is halved in _____________
Options
meiosis I
meiosis II
mitosis
amitosis
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Solution
Chromosomes number is halved in meiosis I
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RELATED QUESTIONS
Synthesis phase in the cell cycle is called so, because of the synthesis of more:
A. RNA
B. RNA and proteins
C. DNA
D. Glucose
What is the number of chromosomes in the gametes of human beings?
Choose the best option out of the four alternatives a, b, c and d
Question 1:
The number of chromosomes in a certain type of cell division is halved. This kind of cell
division occurs in.
(a) Only testis
(b) Only ovary
(c) Both ovary and testis
(d) All body cells
Humans have 46 chromosomes. Their sperms and eggs will have ______ chromosomes each.
Fill in the blank
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Answer the following question in your own words.
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Centromere is related to ________
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Chromosomes appear at equator in ____________
Enumerate the various changes that occur in the nucleus of the cell during anaphase of mitotic division.
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The stage when sister chromosomes separate from their paired condition.
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The stage at which chromosomes occurs reach the opposite poles.
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The phase of meiosis at which homologous chromosomes are separated.
Complete the following sentence with appropriate word :
The spindle fibers are made of _______.
Long answer type question.
Describe the different types of chromosomes.
The number of chromosomes found in human beings is ______.
The loss of one or more chromosomes in ploidy is called ______.
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 |
Define Aneuploidy.
In the human male, a sperm contains autosomes and ______.
