Exam 8: Chromosome Mutations: Variation in Number and Arrangement

Doubling the chromosomes of a sterile species hybrid with colchicine or cold shock is a method used to produce a fertile species hybrid called a ____.

Given that a human normally contains 46 chromosomes,give the chromosome number for each of the following conditions: Turner syndrome female,no Barr bodies Klinefelter syndrome male,one Barr body

Assume that a species has a diploid chromosome number of 24.The term applied to an individual with 25 chromosomes would be____ .

Name two methods used in genetic prenatal diagnostic testing in humans.

Having a complete set or sets of chromosomes is called____.

What is a fragile site?

What type of chromosomal configuration does the following diagram illustrate?

How do deletions and translocations in chromosomes often occur?

What is the leading cause of Down syndrome?

A chromosome without a centromere is ____.

A child is born with Turner's syndrome and she is red green color blind recessive X- linked).Her father is red green color blind as well and her mother is homozygous dominant for color sight.What had to happen in order for this child to be born with this chromosomal complement?

An expected meiotic pairing configuration in a____ would be a trivalent.

An ____may arise when three sperm cells are involved in fertilization of a single egg.

The chromosomal aberration that causes cri- du- chat syndrome can be referred to as an____.

What explanation is generally given for lethality of monosomic individuals?

____is viewed as a major cause of aneuploidy.

Haploinsufficiency refers to____ .

What is a potentially evolutionary advantage of inversion heterozygosity?

Genetic anticipation is best described as____ .

The condition known as cri- du- chat syndrome in humans has a genetic constitution designated as ____.