Polyploidy can result when
A translocation occurs between two chromosomes
Incorrect
One pair of homologous chromosomes does not separate during meiosis
Incorrect
A developing gamete is haploid.
Incorrect
A haploid sperm fertilizes a diploid egg
Correct! A haploid sperm ferlitizing a diploid egg can result in an extra set of chromosomes because the egg is not haploid.
The type of chromosome abnormality that yields a long chromosome consisting of most of two acrocentric chromosomes is a(n)
Robertsonian translocation
Correct! A Robertsonian translocation involves the fusion of 2 long arms of acrocentric chromosomes and the loss of the short arms.
Pericentric inversion
Incorrect
Paracentric inversion
Incorrect.
Reciprocal translocation
Incorrect
One of the advantages of chorionic villus sampling over amniocentesis is that CVS
Samples amniotic fluid
Incorrect.
Can never be lethal
Incorrect
Provides earlier results
Correct! CVS can be resulted in the 10 – 12th week gestation, where amniocentesis is usually performed between 14 and 16 weeks.
a. Poses lesser risk to the fetus
Incorrect