These vessels take the blood back most directly to the heart
A) arteries B) veins C) venules D) arterioles
Answer: B
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Assume that one allele is completely dominant over the other for the following questions.
a. Two individuals heterozygous for a single trait have children. What is the expected phenotypic ratio of the possible offspring? b. Two individuals heterozygous for two traits have children. What would be the expected phenotypic ratio of the possible offspring? c. Crossing two individuals heterozygous for two traits results in the same phenotypic ratio as for a single trait. Are the genes for these two traits on separate chromosomes or on the same chromosome? Explain your answer. (Remember that the gene for each trait is located at a locus, a physical region on the chromosome.) Yes, the traits would be on the same chromosome as the loci are linked.
A cancer stem cell can divide to give rise to
A) tumor cells, abnormal daughter cells, normal cells, and more cancer stem cells. B) more cancer stem cells only. C) healthy stem cells and normally differentiated cells. D) invasive cells and metastatic malignant cells.
What are the predicted phenotypes of the children from a union of a woman who is heterozygous for
hemophilia and a man who is normal? (Use the Punnett square to verify your answer.) a. 100% normal b. 75% hemophilia: 25 % normal c. 50% hemophilia: 50% normal d. 25 % hemophilia: 75% normal e. 100% hemophilia
The uptake of foreign DNA into bacterial cells is called ________
A) translation B) transcription C) transgenesis D) transfection E) transformation