Water fleas, Daphnia magna, can switch between asexual and sexual reproduction cy-cles. Which of the following observations support(s) the hypothesis that sex is favored in unpredictable environments?

a. The introduction of predators triggers sexual reproduction.
b. Daphnia reproduces asexually every other generation in a variety of habi-tats.
c. Daphnia reproduces sexually when its aquatic habitat dries up.
d. Asexual D. magna strains outcompete introduced competitors.
e. A and C.


E

Biology & Microbiology

You might also like to view...

What biological technique has provided evidence in establishing the eukaryotic superkingdoms?

A. molecular sequence comparisons B. bacterial culturing C. the identification of land plants D. visualizing cell shape

Biology & Microbiology

Scanning electron microscopes bombard specimens with a stream of electrons; however, the specimen image is produce by electrons that are derived from atoms of the specimen itself rather than by the electrons used to bombard the specimen.

Answer the following statement true (T) or false (F)

Biology & Microbiology

Compare and contrast DNA and RNA

What will be an ideal response?

Biology & Microbiology

Alison was looking at a tissue under a microscope. It had cells within lacunae, and the matrix was glassy-looking. What type of tissue was she looking at?

A. adipose B. areolar C. bone D. blood E. cartilage

Biology & Microbiology