A patient presents the following symptoms: anemia, dilation of heart, lung damage and pneumonia,
rheumatism, abdominal pain, and kidney failure. After learning about their family history, you run a
genetic test for which disorder?
a. Cystic fibrosis
b. Albinism
c. Sickle cell disease
d. Achondroplasia
e. Pleiotropy
C
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The difference between the vital capacities of young,
healthy adult males and that of young, healthy adult females is about __________ liters. a. 5.7 b. 4.2 c. 3.7 d. 2.5 e. 1.5
Map units on a linkage map cannot be relied upon to calculate physical distances on a chromosome for which of the following reasons?
A) The frequency of crossing over varies along the length of the chromosome. B) The relationship between recombination frequency and map units is different in every individual. C) Physical distances between genes change during the course of the cell cycle. D) The gene order on the chromosomes is slightly different in every individual.
Round seeds (R) are dominant to wrinkled seeds (r), and yellow seeds (Y) are dominant to green seeds (y). What is the expected phenotypic ratio of a cross between an RrYy and an rryy individual?
A) 1:2:1 B) 9:3:3:1 C) 3:1 D) 1:1:1:1
Which of the following is NOT a physiological change related to photoperiodism?
A. some flowering B. root branching C. breaking bud dormancy D. seed germination E. onset of senescence