Explore BrainMass
Share

Chromosomal Aberrations in Animals and Plants

This content was STOLEN from BrainMass.com - View the original, and get the already-completed solution here!

What is the impact of chromosomal aberration during Meiosis II, when the normal gametes generated as an end product of Meiosis II are compared with those produced from Meiosis II with chromosomal aberrations?
What would happen when an abnormal gamete is crossed with a normal gamete produced from the end product of MeiosisII?

© BrainMass Inc. brainmass.com October 24, 2018, 10:20 pm ad1c9bdddf
https://brainmass.com/biology/dna-chromosomes-and-genomes/chromosomal-aberrations-in-animals-and-plants-156226

Solution Preview

Chromosomal aberration during Meiosis II causes a meiotic error due to non-disjunction known as Aneuploidy. It is a condition that involves deletion of 1 or 2 chromosomes leading to hypoploidy or duplication of 1 or 2 extra chromosomes leading to hyperploidy in a normal set. Aneuploidy may occur either in autosomes or allosomes.

Patients suffering from Down's syndrome have a karyotype with 47 chromosomes (46+1= 47 which may be 44+1+XX or 44+1+XY). They are characterized by their short stature, small and slant eye balls, a prominent transverse fold on the palm, sagging and salivating mouth, swollen lips and thick tongue, enlarged forehead, flattened nose, reduced limbs with stubby fingers and toes, low IQ and mild mental retardation, ...

Solution Summary

Chromosomal aberration during Meiosis-II causes a meiotic error due to non-disjunction known as Aneuploidy. Chromosomal aberration cause diseases such as Down's syndrome and Cridu-chat syndrome due to autosomal Aneuploidy and Klinefelter's Syndrome and Turner's syndrome due to allosomal Anueploidy. Aneuploidy in case of plants is very common, and it is known as Polyploidy. Polyploidy has its significance in case of plants, as they are disease resistant, show a high degree of variation and are responsible for speciation during the process of evolution.

$2.19
See Also This Related BrainMass Solution

Characteristics of DNA and RNA molecules, and their function.

1.What unique ability do DNA molecules have? Why is this ability so important?
2.What are the similarities and differences in DNA and RNA?
3.What are the respective functions in general and in protein systhesis?
4.What are the various factors that might damage genes?
5.Explain the process of mitosis along with its various stages.

View Full Posting Details