This genetic disorder causes red blood cells to assume an unusual shape and produce abnormal hemoglobin proteins.
A. Tay-Sachs disease
B. Huntington's disease
C. achondroplasia
D. sickle-cell disease
D. sickle-cell disease
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In humans, the sickle-cell trait is caused by a single defective allele, but sickle-cell disease only occurs in individuals that are homozygous for the sickle-cell allele. A man and woman each carry the trait, but do not have sickle-cell disease. What is the probability that their first two children will both have sickle-cell disease?
A. 1/16 B. 1/8 C. 1/4 D. 3/8 E. 1/2 Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about monohybrid crosses? About determining the probability of two independent events? Consider Possibilities · What other information is related to the question? Which information is most useful? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Hypothermia results from
a. a drop in core temperature for a prolonged period of time. b. a lack of homeostasis. c. an imbalance between energy inputs (nutrients) and energy output. d. prolonged exposure to heat. e. dehydration.
Sister and Non-Sister Chromatids
What will be an ideal response?
What are the cells that are specialized to produce and conduct electrochemical impulses called?
A. neurons B. dendrites C. astrocytes D. fibroblasts E. axons