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Biology 11th Edition by Cecie Starr ,Ralph Taggart
Edition 11ISBN: 978-0495106784Biology 11th Edition by Cecie Starr ,Ralph Taggart
Edition 11ISBN: 978-0495106784 Exercise 11
Somatic cells of individuals with Down syndrome usually have an extra chromosome 21; they contain forty-seven chromosomes.
a. At which stages of meiosis I and II could a mistake alter the chromosome number
b. A few individuals with Down syndrome have forty-six chromosomes, two of which are normal-appearing chromosomes 21 and a longer-than-normal chromosome 14. Speculate on how this chromosome abnormality may have arisen.
a. At which stages of meiosis I and II could a mistake alter the chromosome number
b. A few individuals with Down syndrome have forty-six chromosomes, two of which are normal-appearing chromosomes 21 and a longer-than-normal chromosome 14. Speculate on how this chromosome abnormality may have arisen.
Explanation
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a.
The mistake which could alter the ch...
Biology 11th Edition by Cecie Starr ,Ralph Taggart
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