In a population, the allele frequency for red flower color remained at 0.7 and the allele frequency for white flower remained at 0.3 for six generations. This ____________ an example of a Hardy-Weinberg equilibrium in that _____________.
A. is not, evolution occurred
B. is, evolution did not occur
C. is, evolution occurred
D. is not, evolution did not occur
Answer: B. is, evolution did not occur
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To quantify the environmental contribution of a behavioral trait, scientists turn to ____
a. whole genome sequencing b. heritability c. genome wide association studies d. analysis of innate behaviors e. SNP and haplotype analyses
Which of the following pairs indicates the closest
macroevolutionary link among the animals according to the evolutionary history tree in the text? a. turtles; crocodiles b. lizards; amphibians c. mammals; birds d. bony fishes; lung fish e. crocodiles; birds
Communities with a high level of bacterial diversity are found in many habitats including soil and aquatic environments. Recent studies indicate this diversity is crucial to the functioning of these communities. The same studies have also found that phage abundance plays a critical role in the maintenance of the bacterial diversity within these communities. What is the probable role of phages in this community? (Check all that apply)
_____ they act as facilitators _____ they have a mutualistic relationship with the bacteria _____ they parasitize the bacteria _____ they have a commensal relationship with the bacteria _____ they compete with the bacteria for space and nutrients _____ they keep any one species of bacteria from becoming too abundant in the community Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about maintaining bacterial diversity in a community? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection on Process: Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In angiosperms, the mature female gametophyte is the embryo sac
____________________ Indicate whether the statement is true or false.