Chromosomes And Recombination

Triploidy is most often due to ________________

__________ is any chromosome number other than 46

FISH :

• Detects a specific positions on a chromosome

• Paints whole chromosomes

• Stands for fluorescence in situ hybridization

• A and C

• B and C

Aneuploidies are due to ___________________

A complete mole is:

• Diploid and has chromosomes all from paternal origin

• Has a small atrophic fetus

• Contains no fetus or placenta

• Has an extra paternal chromosome set

• A and C only

Tetraploidy is always __________ or ____________

Genetic linkage analysis is based on:

• PCR and computer analysis

• Probability of meiotic recombination events

• Physical map of the DNA making up the chromosome

• Number of people in a population

• Patchwork inheritance pattern of DNA

Possible manifestations of Down Syndrome are

• Transverse palmar crease and flat wide bridge of nose

• Microcephaly, and protruding tongue

• Acute lympocytic leukemia

• A, B, and C

• A and C only

If there are one or more crossovers, then the ratio of non-recombinant: recombinant genotypes will be:

• 1:2

• 2:1

• 1:1

• 1:3

• Unknown