Advertisements
Advertisements
Question
Explain the Term Leptotene
Advertisements
Solution
Leptotene: Th this step the chromosomes become visible as single threads.
APPEARS IN
RELATED QUESTIONS
Give appropriate biological or technical terms for the following :
The condition in which a pair of chromosomes carries similar alleles of a particular character.
What is the difference between chromatin fibre and chromosome?
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
State the difference between:
Chromosome and chromatid:
Chromosomes are mainly made up of ______.
Mention the contribution of the scientist given below in the study of chromosome:
Sutton and Boveri
Choose the correct answer:
Chromosome number of man is _____________
Enumerate the various changes that occur in the nucleus of the cell during prophase.
Differentiate between
Chromatin and Chromosome.
Give Technical Terms
The stage at which chromosomes occurs reach the opposite poles.
Name the following:
The number of chromosomes present in human gametes.
In humans, the sex chromosome complement is
Describe the structure of sex chromosomes with the help of labelled diagram.
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 |
In higher unisexual animals, one pair of chromosomes is not identical in two sexes. It is called as ______.
The chromosomes are duplicated in ______.
Given below is a set of four term. Choose the odd one and write the category of the remaining term:
In the human male, a sperm contains autosomes and ______.
