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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In the spinal cord the central canal is lined with ependymal cell and contain cerebrospinal fluid. central canal is a conduit that runs the entire length of spinal cord. Ependymal cell plays an importance role in production and regulation of cerebrospinal fluid.
Answer:
Ciliate
Explanation:
They can move, eat other creatures, and are unicellular.
C. both organs and a true body cavity. An example of an organ is the intestine.