Recent questions tagged cell-division

Description : Write a note on Chromosomes.

Last Answer : The nucleus of the cell contains thread like structures called chromosomes. Chromosomes are composed of DNA and proteins. They appear as distinct structures found in the nucleus of a cell. They ... consists of two arms called chromatids, which are attached to the same part called centromere.

Description : What is Watson and crick Model of DNA?

Last Answer : Each DNA molecule is made of thousands of small units called nucleotides. There are four types of nucleotides in DNA. I. Adenine (A) nucleotides II. Thymine (T) nucleotides III. Cytosine (C) ... two stands formed of nucleotides. These two are linked with each other by cross bands like a ladder.

Description : Write a note on DNA

Last Answer : DNA means Deoxyribonucleic acid. As different sections of DNA are a set of information for the development of different characters in an organism. So, DNA is called hereditary material.

Description : Define heredity and describe its importance in transferring characteristics from parents to offspring.

Last Answer : During reproduction, living things pass on their characteristics to their offspring. This process is called heredity for examples I. Colour of eye II. Skin colour III. Hair colour IV. Free or attached earlobes V. Height VI. Intelligence

Description : Name the cells produced by meiosis in plants and animals

Last Answer : Plant: Spores Animals: Gametes 

Description : Difference between Mitosis and Meiosis

Last Answer : Mitosis Meiosis During mitosis, two daughter cells are produced from the parent cell. During meiosis, four daughter ... one division takes place in mitosis Two division take place in meiosis.

Description : What are chromatids?

Last Answer : A typical chromosome consists of two arms called chromatids, which are attached to the same part called centromere.

Description : What are parent cell and daughter cell?

Last Answer : During cell division the cell which divides is called Parent Cell and the cell which is produced as a result of cell division is called Daughter Cell.

Description : Define cell division

Last Answer : It is a process by which a cell divides into two daughter cells.

Description : What are haploid cells?

Last Answer : When an organism forms gametes (sperms or eggs) by meiosis, the number of chromosomes is reduced to half in the gametes, is called haploid cell.

Description : Define heredity

Last Answer : During reproduction, living things pass on their characteristics to their offspring. This process is called heredity e.g. colour of eye, skin colour, hair colour etc 

Description : What is gene?

Last Answer : The basic physical and functional unit of heredity is called gene. Genes act as instructions to make molecules called proteins. Gene occur in pairs. Every hereditary character in an organism (tallness, eye ... by a pair of genes. Genes are the sections of DNA molecule and are located on chromosomes

Description : Name two non-inheritable characters.

Last Answer : I. Loss of any part of body does not transferred to children. II. Some diseases like malaria, kidney-stone etc does not transferred to children

Description : Name two inheritable characters.

Last Answer : Eye colour Skin colour