Hybridization regularly occurs between three species of Darwin's finches on Daphne Major, but the finches are still considered different species because
A. they are mechanically isolated.
B. they have different fitnesses.
C. they are reproductively isolated.
D. they occupy different niches.
Answer: D
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For each description below, choose the type of cell division it characterizes. a. mitosis b. meiosis c. both mitosis and meiosis
______ forms genetically identical daughter cells ______ forms genetically unique daughter cells ______ forms four daughter cells ______ parent cell undergoes two rounds of cell division ______ homologous chromosomes exchange DNA prior to dividing ______ forms diploid daughter cells ______ divides after a single round of DNA replication _____ homologous chromosomes undergo synapsis ______ follows a single round of replication What will be an ideal response?
Which of the following is a risk of low crop diversity?
a. The crop will mutate to have characteristics that are harmful to humans. b. Humans will never discover potential pharmaceuticals in existing species. c. The crop is more vulnerable to diseases. d. Agricultural companies are more likely to lose revenue by not having diverse commercial offerings.
Cells spend most of their life
A. in the G0 phase. B. dividing. C. in metaphase. D. undergoing differentiation.
Amebic dysentary is caused by
A) Trichomonas B) Giardia lamblia C) dinoflagellates D) Cryptococcus E) Entamoeba histolytica