The concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.
<h3>What is the endosymbiotic theory?</h3>
The endosymbiotic theory is a well-sustained theory in biology about the origin of eukaryotic cells.
According to this theory, eukaryotic cells emerged by endosymbiosis between primitive eukaryotic cells and bacteria that converted into mitochondria and chloroplast organelles.
The endosymbiotic theory is well sustained in several scientific observations such as the existence of DNA in mitochondria and chloroplasts that is independent of nuclear DNA, the size of ribosomal units, etc.
In conclusion, the concept presented to explain the origin of eukaryotic cells form a bacterial cell parasitized by another descendant cell is called endosymbiosis.
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Answer:
Explanation:
Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
An organism microscope is an organism that can be seen with the acid of a microscope
Haploid (n) cells and nuclei may result in this way.
Further explanation
Sexual reproduction is always meiosis and before its discussion we must should have the concept of chromosomes their set and nuclear division.
Diploid cells
Cell having two pair of chromosomes is called as diploid cell. They are abbreviated as 2n
Haploid cells
Cell having only one set of chromosomes and they are abbreviated as 1n or n.
Ploidy
It is the no of complete arrangements of chromosomes in a cell, and hence quantity of potential alleles for pseudo autosomal and autosomal genes. Physical cells, tissues, and individual creatures can be depicted by the quantity of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploidy (6 sets), heptaploid [2] or septaploid [3] (7 sets), and so forth. The conventional term polyploid is frequently used to depict cells with at least three chromosome sets.
Polyploidy
It is the condition of a cell or life form having in excess of two matched (homologous) arrangements of chromosomes. Most species whose cell have nuclei (eukaryotes) are diploid, which means they have two arrangements of chromosomes—one set acquired from each parent. In any case, a few living beings are polyploid, and polyploidy is particularly regular in plants.
Answer details
Subject: Biology
Level: High
Keywords
- Diploid cells
- Haploid cells
- Ploidy
- Polyploidy
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