An invasive species is a species that ________.
A. spreads rapidly outside its native range and does not cause damage
B. spreads rapidly outside its native range and causes damage
C. spreads rapidly within its native range and causes damage
D. spreads rapidly within, but not outside, its native range
Answer: B
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The gene that encodes for plant height in sunflower plants follows a strict recessive/dominant pattern of inheritance and has 2 alleles (tall and short). A tall sunflower plant is crossed with a short sunflower plant. Half of the offspring from this cross are tall, and the other half are short. From this information, what are the parents' genotypes?
What will be an ideal response?
In HIV, RNA is transcribed to DNA by:
A. matrix. B. reverse transcriptase. C. surface glycoprotein. D. capsid. E. integrase.
In tiger salamanders one phenotype is cannibalistic while another is not. Both are stable strategies. Which form of selection is best represented by this scenario?
A) stabilizing B) directional C) disruptive D) proportional
Some of the stages of meiosis are listed below. For the following statements, select the best choice of these stages.
A. Pairing of homologues occurs during this stage. B. New genetic combinations are present after this stage. C. Recombination via crossing over occurs during this stage. D. E. During this phase, homologues separate. F. During this stage, the sister chromatids begin to separate. G. By the end of this phase, a nuclear envelope forms around each set of haploid chromosomes. H. Following this phase, each individual cell is haploid.