Baby Doe v. The Prenatal Clinic

Multiple Choice

What is Down syndrome?

• A condition caused when the mother drinks alcohol while pregnant.

• A form of childhood cancer.

• A birth defect resulting in a split upper lip and speech problems.

• A condition caused when the baby has too many copies of a chromosome.

• A form of brain damage that results when the baby receives too little oxygen during birth.

Multiple Choice

The diploid chromosome number in standard laboratory mice (genus Mus) is 40. What is n for this organism?

• 40

• 20

• 80

• 50

Multiple Choice

If you investigated cells from a lab mouse with 40 chromosomes you would find a total of ___ sister chromatids first after the ___ stage

• 10:G1

• 20:G2

• 40:M

• 80:S

Multiple Choice

The different copies of chromosome 21 in John and Jane are shown to the left. Which of the following is a normal gamete that might be produced by either John or Jane?

Multiple Choice

How can a cell end up with an incorrect number of chromosomes?

• The chromosomes do not separate correctly during mitosis or meiosis.

• A.The chromosomes are copied incorrectly during mitosis or meiosis. 

• A.Cells divide too many times. 

• A.The chromosomes become damaged when they are being copied.

Multiple Choice

The different copies of chromosome 21 for John, Jane, and their baby are shown here. When and where did the mistake occur?

• Meiosis 1 of parent #1

• Meiosis 1 of parent #2

• Meiosis II of parent #1

• Either Meiosis 1 or II of parent #1

Multiple Choice

If you were on the jury for the malpractice trial of the doctor, what would you decide?

• The doctor must have done something wrong to cause cell division to have malfunctioned.

• The doctor could not have done anything to cause the problem.

• It is impossible to tell if the doctor could be at fault.

Multiple Choice

When would be the best time be to isolate chromosomes for a karyotype? Why would this be the best time?

• G1

• S-phase

• G2

• Prophase

Hotspot

Select the abnormal set of chromosomes in the picture provided.

Multiple Choice

Is the clinic liable for not testing for Down syndrome?

• Yes, the clinic should have tested the baby for Down syndrome.

• It is liable only if the clinic failed to follow suggested guidelines for when to perform the test.

• Yes, it doesn't matter if the clinic was at fault or not.

• No, the clinic should not be held at fault for something beyond its control.