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Helga [31]
3 years ago
7

Due to a mistake during meiosis, a plant species produces gametes that are diploid instead of haploid. The gametes now have twic

e as many chromosomes as they should have. These gametes are not able to mate with normal gametes of that species anymore. However, they are able to mate with other gametes that were produced due to the same mistake. Over time the population of plants with double the number of chromosomes increased. As per the biological species concept, these plants are now considered a separate species. What type of speciation occurred here! a. Alopiatric sup ploidy b. Sympatric autopolyploidy c. Sympatric aneuploidy d. Allopatkalloploidy e. Sympaticaloploidy
Biology
1 answer:
valkas [14]3 years ago
3 0

Answer:

b. Sympatric autopolyploidy

Explanation:

Sympatric speciation will occurs when a new species when two groups from the same ancestral population evolve without any geographical separation.

Autopolyploidy will appear when an individual possess more that two sets of chromosomes both from the same parental species

Therefore, since a new species was formed as a result of autopolyploidy. The type of speciation that occurred was Sympatric speciation.

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<h2>Cell Cycle </h2>

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Eukaryotes grow and divide by cell cycle.

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Interphase period (G1, S, G2 phases) - cell grows by size, duplicates its content, replicates its DNA, and finally prepares for mitotic cell division .

Mitosis and cytokinesis - formation of two identical daughter cells

Cell cycle is regulated by regulatory or restrictive checkpoints in the cell cycle which are activated with detection of a defective DNA.

Proliferation of undesired or cells with defective DNA like in case of tumor cells is controlled by the action of suppressing agents like p53 and cyclins.

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