Why are the number of chromosomes in body cells and gametes different?
As gametes are produced, the number of chromosomes must be reduced by half. Why? The zygote must contain genetic information from the mother and from the father, so the gametes must contain half of the chromosomes found in normal body cells.
How do the chromosomes of body cells differ from chromosomes of gametes?
A body cell contains a complete number of chromosomes and is called a diploid cell while a gamete contains only half the number of chromosomes of its parent cell, and it is called a haploid cell.
Are gametes identical to body cells?
Meiosis is the type of cell division that produces gametes . A human body cell contains 46 chromosomes arranged in 23 pairs.
|Used for||Growth, repair, asexual reproduction||Production of gametes for sexual reproduction|
How many gametes are in a body cell?
In humans, the gametes are called the sperm (in the male) and the egg (in the female). These are formed by the process of meiosis, which can turn a diploid cell into four haploid gametes.
How are body cells and gametes different?
The body cells contain a complete set of chromosomes and are diploid in nature. The gamete cells are haploid. They contain a single set of chromosomes or are haploid. Each set of chromosomes is contributed from each parent to form a diploid zygote.
Why do you think a gamete has only 23 chromosomes and not 46?
Gametes have half the total number of chromosomes that the organism needs to develop and are referred to as haploid . For example, humans need 46 chromosomes to develop, therefore a human gamete has 23 chromosomes. Fertilisation is the fusion of the nucleus of a male gamete with the nucleus of a female gamete.
How are gamete cells different from other cells in the body quizlet?
How do gametes differ from body cells? Gametes have 23 chromosomes, when body cells have 46.
What is the difference between gametes and all other body cells quizlet?
What is the difference between body cells and gametes (sex cells)? Body cells make up the body of the organism, while gametes are sex cells that could be either a sperm or an egg cell.
Why are gametes genetically different?
Genetic variation is increased by meiosis
During fertilisation, 1 gamete from each parent combines to form a zygote. Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote.