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

A) trisomy
B) triploidy
C) 45, X
D) 46, 5p-
E) heteroplasmy


Answer: D

Biology & Microbiology

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Genes are said to be linked when:

A. they lie on the same chromosome. B. they lie on the same chromosome and are greater than 50 map units apart. C. they lie on the same chromosome and are less than 50 map units apart. D. they are alleles of the same gene. E. None of these choices are correct.

Biology & Microbiology

When placed in an aqueous solution, amphipathic molecules will orient themselves with

A. hydrophobic hydrocarbon chains facing the water and hydrophilic head groups in the middle. B. hydrophilic hydrocarbon chains facing the water and hydrophobic head groups in the middle. C. hydrophilic hydrocarbon chains in the middle and hydrophobic head groups facing the water. D. hydrophobic hydrocarbon chains in the middle and hydrophilic head groups facing the water.

Biology & Microbiology

Which of the following layers and regions comprise the lobes of the kidney?

a. major and minor calyces b. renal capsule and medulla c. renal fascia and pelvis d. cortex and renal pyramids

Biology & Microbiology

In an autosomal dominant disorder such as

Huntington disease, the probability of two parents with the gene passing this disorder on to a child is a. 0%. b. 25%. c. 50%. d. 75%. e. 100%.

Biology & Microbiology