In the biological species concept, it is specified that two organisms are of the same species if they
breed and
a. are unsuccessful in producing offspring.
b. produce any offspring.
c. produce fertile offspring under laboratory conditions only.
d. produce fertile offspring under normal circumstances.
e. produce infertile offspring.
D
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Woese
A. was involved in determining rRNA sequences. B. proposed breaking prokaryotes into two groups. C. proposed breaking eukaryotes into Domains Archaea and Bacteria. D. was involved in refining the Gram stain for classification purposes. E. was involved in determining rRNA sequences AND proposed breaking prokaryotes into two groups.
Auxin concentration gradients
a. appear once germination begins. b. promote the transcription of an enzyme that breaks down cytokinin. c. allow formation of plant parts in expected patterns. d. help young cells elongate so that shoots and roots lengthen. e. are described by all of these EXCEPT "appear once germination begins."
Reptiles are __________ (cold-blooded animals)
with scales. Fill in the blank(s) with the appropriate word(s).
Groups of organisms that cannot be distinguished morphologically but have no gene flow between them, and are indeed evolutionary independent units, are known as ________ species
Fill in the blank(s) with correct word