Choose the most appropriate answer for each.
-triploidy
A)3n; generally sterile
B)a chromosome segment is permanently transferred to a nonhomologous chromosome
C)(2n - 1); a zygote deprived of a chromosome
D)a repeat of a particular DNA sequence in the same chromosome or in nonhomologous ones
E)(2n + 1); three chromosomes of the same kind are present in a set of chromosomes
F)a piece of the chromosome is inadvertently left out during the repair process
G)a chromosome segment that has been cut out and rejoined at the same place, but backward

Question

Quizplus · Accepted Answer

Triploidy refers to having three copies (rather than the normal two copies) of each chromosome in a cell. This results in a 3n (or sometimes 69, if referring to humans) chromosome number and is generally associated with infertility or developmental abnormalities.

Answer: C
 Monosomy refers to the loss of one (mono-) chromosome, resulting in a 2n-1 chromosome number (one less than the typical diploid number). This can be due to errors in cell division or chromosomal abnormalities.

Answer: E
 Trisomy refers to the presence of an extra (tri-) chromosome, resulting in a 2n+1 chromosome number. Down syndrome, for example, is caused by trisomy of chromosome 21.

Note: B, D, F, and G do not describe any of the given answer choices accurately.

Choose the Most Appropriate Answer for Each