Exam 8: Variation in Chromosome Structure and Number

Polyploid plants tend to produce less fruits and flowers, be smaller in size, and cannot adapt as well to extreme environmental conditions as normal varieties.

A translocation cross may occur in an individual which has which of the following?

Since no genetic material is lost or gained by an inversion, it will only influence the phenotype of the individual if the breaks that occur are in important regulatory regions for the genes within the inverted sequence.

Which of the following is/are correct concerning mitotic nondisjunction?

Inversion loops can occur in which of the following?

The aneuploid condition frequently effects the phenotype of an organism.

Which human cells exhibit endopolyploidy?

Which of the following is not an example of euploidy?

A loss of an internal piece of a chromosome is called a .

Edwards and Patau syndrome are examples of .

Which of the following types of plants would usually be a seedless variety?

Which of the following rarely has an effect on the phenotype of the individual who carries it?

Genetic abnormalities that occur before fertilization may result in some tissues of the body differing in their genetic composition. This is called mosaicism.

Translocations and inversions represent a change in the total genetic material of a chromosome.

is a drug that is used to experimentally produce polyploidy in organisms.

Inversions are contained within what percent of the human population?

Variations in a gene are called allelic variations.

Familial Down syndrome is a result of which of the following?

Which of the following describes an organism with two complete sets of chromosomes from two different species?

The failure of chromosomes to separate during anaphase is called .