Abnormal heart sounds called ___________ can indicate valve problems.
a. murmurs
b. stroke
Answer: a. murmurs
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Plant and animal development share a number of features, but differ in major ways as well. Which of the following best summarizes the similarities between the two forms of development?
A) Both plants and animals develop from a process of single fertilization. B) Both plants and animals produce specialized tissues through irreversible processes of determination and differentiation. C) Both plants and animals produce gametes via meiosis followed by mitosis of haploid cells. D) Both plant and animal development depend on precise control of gene expression in time and in space.
Forests are generally regarded as CO2 ________.
A. sources B. sinks C. both a source and a sink D. None of the choices are correct.
When affected males produce all affected daughters and no affected sons, the pattern of inheritance is likely to be
____________________. Fill in the blank(s) with the appropriate word(s).
Two butterflies have identical wing patterns, but in one the pigment is blue and in the other the pigment is yellow. The original ancestor had green wing pigments. The wing pigment is an example of a(n) ________
Fill in the blank(s) with correct word