Radiolarians have frothy vacuoles and lipid droplets, which provide them with buoyancy in marine environments
Indicate whether the statement is true or false.
ANSWER: True
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In an experiment two inbred strains are mated to each other and the offspring demonstrate heterosis
The offspring (F1's) are crossed to each other and a ratio is obtained where there are 9 individuals that demonstrate heterosis and 7 that are similar to the original parental generation. What is this most likely a demonstration of? A. Dominance hypothesis B. Overdominance hypothesis C. Cannot tell from the information given. D. That there is a significant environmental interaction in phenotypic development
________ is the only gaseous hormone
a. gibberellin b. auxin c. abscisic acid (ABA) d. ethylene
Which of the following is NOT one of the important properties of the immune system that results from the action of B and T cells?
A) self-tolerance B) redundancy C) diversity D) memory E) specificity
One consequence of genetic drift is:
a. increasing heterozygosity in the population. b. the maintenance of multiple alleles across long periods of time. c. populations diverge in terms of their allele frequencies. d. populations maintain the same set of alleles through time. e. All of the above.