Which of the following is not part of chromosome?

Which of the following is not part of chromosome?

Centriole is not present in chromosomes, it is a cell organelle.

What substance is found in chromosomes?

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.

Which of the following is not a part of a human chromosome in any phase?

Human chromosomes

Which one of the following is not a correct statement about chromosomes?

The incorrect statement about chromosome is that chromosomal localisation is preceded by DNA replication. Explanation: the replication of the DNA takes place during the preparatory phase or the interphase of the cell division. the duplication of the chromosome usually takes place in the metaphase of the cell division.

What do the chromosomes carry?

Chromosomes are structures found in the center (nucleus) of cells that carry long pieces of DNA. DNA is the material that holds genes. It is the building block of the human body. Chromosomes also contain proteins that help DNA exist in the proper form.

Why do red blood cells have no chromosomes?

In this way, when a sperm and egg meet and fuse, the result is a new cell with the two paired sets. Mature red blood cells have no nucleus, so they have no autosomal or sex chromosomes—only the chromosome present in their mitochondria.

Which of the following is not a part of human chromosomes a nucleosome B histone C Centriole D centromere?

Ans is (d) Centriole is a not present in chromosome it is cell organelle.

Which of the following is not true about inversion?

Which of the following is not true about inversion? Explanation: Pericentric inversion is the inversion that doesn’t involve the centromere. Here in option A there is no change at all, option B and C are including the centromere.

Which of the following is not correct about plasmid in bacterial cell?

-Option D says that the plasmid’s DNA is as long as chromosomal DNA. As the plasmid DNA contains only extra genes that are required in certain conditions only, the DNA of the plasmid carries shorter sequences than the chromosomal DNA. Thus, this statement is incorrect. Therefore, the right answer is option D.

Why are chromosomes not visible under a microscope when not dividing?

The chromosomes are usually not visible even under a microscope when the cell is not dividing. It is visible under a microscope only when the DNA in a chromosome gets tightly packed during the metaphase stage of cell division.

What is the membrane that encloses the chromosomes?

Pellicle: It is the membrane that encloses the chromosomes. Each chromosome is bounded by a pellicle, which is very thin and is made up of achromatic (non-genetic) material. Matrix: It is the jelly-like ground substance of chromosomes that is enclosed by pellicle. It is an achromatic (non-genetic) material and contains the chromonemata.

What is the constricted region of linear chromosomes called?

The constricted region of linear chromosomes is known as the centromere. Although this constriction is called the centromere, it usually is not located exactly in the center of the chromosome and, in some cases, is located almost at the chromosome’s end.

What are the different types of chromosome?

They are of different types based on their shape, structure, and function. i) Chromosome types based on the number of centromeres present on a chromosome: Monocentric: This type of chromosome has only one centromere. Dicentric: It has two centromeres. Polycentric: It has more than two centromeres. Acentric: It does not have any centromere.