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a polyploid

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11y ago

polyploidy

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Q: What term reffers to the occourrance of one or more sets of extra chromosomes in an organism?
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What are polyploidy and when is this condition useful?

Polyploidy allows the formation of new species derived from different ancestors. Polyploid is the condition in which an organism has extra sets of chromosomes.


What is polyploidy?

Polyploidy is the condition in which an organism has extra sets of chromosomes. It can be defined as a chromosomal alteration in which the organism posses more than two complete chromosome sets. Classified as an accident in cell division.


Identify several things that can be seen with a karyotype?

A karyotype is the number and visual appearance of the chromosomes in the cell nuclei of an organism or species. A karyotype indicates gender, and whether there are any chromosomal abnormalities.


What is a rat karyotype?

chromosomes having centromere of same size and position


Complete extra sets of chromosomes?

twins


Is cleft lip due to a lack if chromosomes or extra chromosomes?

No , it is caused by a single gene mutation .


How many chromosomes does a person with edward Syndrome have?

47 chromosomes , the extra one is the pair no# 18


Where does the cell pior to undergoing mitosis obtain the extra or additional set of chromosomes?

The extra set of chromosomes is obtained by replicating the original pair. The two chromosomes end up in different cells at the end of mitosis.


The condition in which a diploid cell has an extra chromosome is called?

Polyploidy is the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes. In other words, the polyploid cell or organism has three or more times the haploid chromosome number. Polyploidy arises as the result of total nondisjunction of chromosomes during mitosis or meiosis.


What is the diagnostic tool that reveals missing or extra chromosomes and some structural changes in an individual's chromosomes?

Karyotyping


What mutation causes either the inclusion of an extra chromosomes in offspring or the deletion of an entire chromosomes?

non-disjunction


What is an extra set of chromosome?

The condition in which an organism has complete extra sets of chromosomes is called polyploidy. This condition can cause a number of severe birth defects. Most do not live a full lifespan for their species.