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FL 2 Q7 Bio/Biochem

Posted: Mon Apr 30, 2018 1:49 pm
by MCATx2
Individuals with a translocated (q14; q21) chromosome instead of two normal chromosomes 14 and 21 are called ROB carriers.

So why is the answer 45 chromosomes if you are an ROB carrier?

Shouldn't it be 22 somatic chromosomes - 2 chromosomes (14 and 21) = 20 chromosomes + 1 translocated chromosome = 21 + 2 sex chromosomes = 23 * 2 = 46?

Can someone help explain this one?

Thank you

Re: FL 2 Q7 Bio/Biochem

Posted: Sat May 12, 2018 11:01 pm
by Snazia
As the passage states, part of the RO Syndrome is that two of your chromosomes are fused into one, so you would end up with one less than a normal number.

Re: FL 2 Q7 Bio/Biochem

Posted: Thu Jun 07, 2018 2:12 pm
by NS_Tutor_Katelyn
Snazia wrote:As the passage states, part of the RO Syndrome is that two of your chromosomes are fused into one, so you would end up with one less than a normal number.


Correct.