Numerical Chromosome Abnormalities
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10 Terms
Is this a numerical or structural chromosome abnormality?
Numerical, because there are more than 46 total chromosomes, the extra chromosome is in group 21, which indicates Down Syndrome
Is this a numerical or structural chromosome abnormality?
Structural, because this abnormality is when a chromosome's physical structure is altered, meaning a segment is missing, extra, flipped, or attached to the wrong place. The karyogram shows a balanced reciprocal translocation among chromosomes 4 and 12.
What is a haploid?
A cell containing 1 set of chromosomes (23) i.e. sperm and egg cell
What is a diploid?
A cell containing 2 sets of chromosomes (46) i.e. normal cell and fertilized egg
What is aneuploidy?
Cytogenetic abnormalities in which all or part of one or more chromosomes is duplicated or deleted
What is polyploidy?
Having one or more extra sets of chromosomes
What is triploidy?
Three set of chromosomes (69 chromosomes)
What is tetraploidy?
Four set of chromosomes (92 chromosomes)