Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
What are the parts of a chromosome and its function?
A chromosome has generally 8 parts; Centromere or primary constriction or kinetochore, chromatids, chromatin, secondary constriction, telomere, chromomere, chromonema, and matrix. Centromere or Kinetochore: It is the primary constriction at the center to which the chromatids or spindle fibers are attached.
What are the parts of chromosomes?
The Parts of a Chromosome
It turns out that chromosome can be divided into three different parts: the centromere, the arm and the telomere. Notice that the chromosome is often depicted as an X-shaped structure with a constriction in the middle.
What are the functions of chromosome?
Chromosomes are the highest level of organisation of DNA and proteins. The main function of chromosomes is to carry the DNA and transfer the genetic information from parents to offspring. Chromosomes play an important role during cell division. They protect the DNA from getting tangled and damaged.
What are the 6 parts of chromosomes?
6 Main Parts of a Chromosome
- Part # 1. Pellicle and Matrix:
- Part # 2. Chromatids, Chromonema and Chromomeres:
- Part # 3. Centromeres (= Primary constriction):
- Part # 4. Secondary Constriction:
- Part # 5. Satellite:
- Part # 6. Telomere:
What are the functions of chromosomes Class 9?
Functions of chromosomes
- The main function of chromosomes is to carry the genetic material from one generation to another.
- Chromosomes play an important role and act as a guiding force in the growth, reproduction, repair and regeneration process, which is important for survival.
What is chromosome function Class 8?
Chromosomes are found in the nucleus of a cell. Function: Chromosomes carry genes and help to transfer characters from the parents to the offspring.
What is the top part of a chromosome called?
The tip of each chromosome is the telomere.
What two main parts make up a chromosome?
Chromosomes mainly constitute DNA and histone proteins. DNA is wrapped around a core of histone octamer to form a nucleosome. Nucleosomes are the repeating unit present in the chromatin.
Where are chromosomes found in a cell write their functions?
Chromosomes are found in the nucleus of the cell. They carry genes and help in inheritance or transfer of characters from parents to offspring.
What is the function of chromosomes Brainly?
Answer: The most important function of chromosomes is to carry the basic genetic material – DNA. DNA provides genetic information for various cellular functions. These functions are essential for growth, survival, and reproduction of the organisms.
What are the 4 stages of the cell cycle?
In eukaryotes, the cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases — G1 and G2, the so-called gap phases — are less dramatic but equally important.