Your biology instructor has assigned you a lab exercise to test a hypothesis regarding the inheritance of stem length in pea plants. If your assignment is specifically to conduct a monohybrid cross for stem length from available genotypes growing in the lab, which of the following crosses should be performed?
A. Tt with tt
B. Tt with TT
C. Tt with Tt
D. tt with tt
E. TT with TT
C. Tt with Tt
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Oxygen was a driving factor in the formation of eukaryotic cells
Indicate whether the statement is true or false.
Which of the following is NOT a line of evidence that Kingdom Animalia is a monophyletic group?
a. The ribosomal RNA of animals is more similar to that of other animals than it is to any other form of life. b. Animals share unique similarities in their cell-to-cell junctions. c. All animals have the same genetic code. d. Animals share similarities in the molecules in their extracellular matrices. e. All animals have bilateral symmetry.
Approximately what percentage of the known biodiversity on Earth is composed of plants?
A. 6-8% B. 50-55% C. 16-19% D. 63-67% E. 12-15%
Clements proposed the climax-pattern model of succession. Governing factors for this model include
A. soil conditions. B. climate. C. each successive community preparing the way for the next. D. All of the choices are correct.