Which of the gamete combinations below is most likely to result in a normal embryo which dies because of abnormalities in the placenta?

1.egg / sperm
2.sperm / sperm
3.egg / egg
4.all are equally likely
3

Biology & Microbiology

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Which of the following branches of biology examines the form and variety of organisms in their

natural environment?

a. Taxonomy b. Natural history c. Comparative morphology

d. Biogeography e. Geology

Biology & Microbiology

Sequence similarity between genes plays an important role in assigning gene function

Indicate whether the statement is true or false

Biology & Microbiology

A researcher is interested in comparing the DNA sequence for the gene encoding myosin between a cheetah (mammal) and a red snapper (fish). Which database would be most helpful to her?

A. GenBank B. Swiss Prot C. PIR (Protein Information Resource) D. GenPept E. PDB (Protein Data Bank)

Biology & Microbiology

Usually the only epidermal cells with chloroplasts are:

a. stomata.
b. stoma.
c. parenchyma.
d. guard cells.
e. all of these.

Biology & Microbiology