Biology Questions
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The Hardy-Weinberg law states that an equilibrium of allele frequencies in a gene pool will remain in effect in each succeeding generation of a sexually reproducing population as long as _____ conditions are met.
If primordial earth lacked free O2, as is speculated, then the first living organisms must have
The polymerization of polypeptides may have been facilitated by _____ which attracts small organic molecules and contains iron and zinc.
The process of evolution occurs in _______.
Characteristics of animal genitalia or plant floral structures which make mating with other species impossible are forms of _____ isolation
In the study of sex selection in humans, studies have found a desire of women for certain types of men has led to the practice of___________.
Polyploid plants can successfully reproduce (produce fertile offspring)
Which of the following is a postzygotic isolating mechanism
______________ occurs when a diploid plant produces diploid gametes due to nondisjunction during meiosis.
What is the frequency of the dominant allele in a population of 100 individuals with the following genotypes: 30 BB, 60 Bb, 10 bb?
The increased fitness of the individuals who are _________ for sickle-cell disease in areas where malaria is prevalent maintains the recessive allele in the population
The shift in the population of peppered moths from 10% dark-colored moths prior to the advent of industry to 80% dark-colored moths after the advent of industry illustrates the process of
In the Hardy-Weinberg equation, 2pq equals the percentage of
When individuals tend to mate with those that have the same phenotype with respect to some characteristic, _____ occurs
The ability of a plant's stigma to control which pollen grains can successfully complete pollination is a type of _____ isolation mechanism
If there is an absence of migration of breeding individuals among populations, ____ will not occur
Which of the following is an example of a vestigial structure?
After separation of the continents, marsupials diversified into many different forms in _____ because there were few, if any, placental mammals present
Charles Darwin based his conclusions regarding common descent on
The mechanism by which adaptation to the environment occurs that was proposed by Darwin was