Question: An acentric chromosome fragment is produced by
recombination between a rearranged and normal homo…
An acentric chromosome fragment is produced by
recombination between a rearranged and normal homolog in which of
the following?
partial chromosome duplication
paracentric inversion
pericentric inversion
reciprocal translocation
Which of the following statements about IS (insertion
sequence) elements is false?
IS elements carry only the genetic information necessary for
their own transposition.
IS elements include inverted terminal repeat sequences on each
side of a transposase gene.
IS elements generate mutations by insertion into genes.
Transposition of IS elements requires expression of transposase
encoded outside of the IS element.
A mating between a male donkey (2n = 62) and a female
horse (2n = 64) produces sterile mules. However, you recently
observed a rare event: a female mule gave birth to an offspring
mating with a horse.
Why are mules sterile?
How many chromosomes are in mules?
How many chromosomes are in the offspring?
Why won’t this mule-horse offspring exhibit fully horse-like
characteristics?
A given chromosome has the following segments: A B C D E
• F G H I J where • represents the centromere. Which of the
following represents a single paracentric inversion?
F G H I J • A B C D E
A B C D E • F H I G J
A D C B E • F G H J I
A B C H G F • E D I J
Which of the following sequences of DNA is most likely
to be found flanking an insertion sequence (IS)?
5′-GGGGGG • • • • • • GGGGGG-3′
5′-GACCTAT • • • • • • ATAGGTC-3′
5′-GACCTAT • • • • • • GACCTAT-3′
5′-GACCTAT • • • • • • TATACAG-3′
