familial down syndrome occurs as a result of which chromosomal aberration a inversion b robertsonian translocation c smithsonian translocation 69101

What is the origin of Down syndrome? A. An excess of DNA ligase, causing abnormal DNA replication. B. A tandem duplication of DNA during meiotic cell division. C. A point mutation in the gene encoding a histone. D. A frameshift mutation during fetal development. E. Nondisjunction of parental chromosomes during meiosis

Madhur L.

an-inherited-disorder-caused-by-a-defective-or-absent-enzyme-is-called-a-a-karyotype-b-trisomy-c-a-2

An inherited disorder caused by a defective or absent enzyme is called (a) a karyotype (b) trisomy (c) a reciprocal translocation (d) an inborn error of metabolism (e) an aneuploidy.

if-a-fragment-of-a-chromosome-breaks-off-and-then-reattaches-to-the-original-chromosome-but-in-the-2

If a fragment of a chromosome breaks off and then reattaches to the original chromosome but in the reverse direction, the result. ing chromosomal abnormality is called a. a deletion. b. an inversion. c. a translocation. d. a nondisjunction.

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Familial Down syndrome occurs as a result of which chromosomal aberration? a) Inversion b) Robertsonian translocation c) Smithsonian translocation

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