The formation of the lens of the vertebrate eye from a skin layer in contact with an outgrowth of the embryonic brain is an example of
A. cellular aggregation.
B. morphogenesis.
C. neurulation.
D. induction.
E. gastrulation.
Answer: D
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To observe the three-dimensional structure of a cell the best type of microscopy would be
A. fluorescence microscopy. B. standard light microscopy. C. scanning electron microscopy. D. differential-interference light microscopy. E. transmission electron microscopy.
Which of these are thought to have anti-cancer benefits?
A) Heterocyclic aromatic amines (HAs) B) Cruciferous vegetables such as broccoli C) Red meats D) Baked potatoes
For several phenotypes in the human population, it is clear that more than just the genotype is influencing the expression of the trait
Analysis of human populations indicates that height and weight are examples of phenotypes under environmental influence as well as genotype. Provide evidence that would support the contention that both environment and genotype influence human weight.
You are attempting to link an individual to a crime. The only evidence you have is a tiny drop of blood. How can you use this drop of blood to definitively make the association?
A) You can use the sample to determine the individual's blood type. B) You can use gel electrophoresis to determine the length of the DNA found in the sample. C) You can use PCR to increase the amount of DNA available for STR analysis.