Agrobacterium tumefaciens can form root nodules in plants and can mate with bacteria, which makes it an excellent host organism for genetic transformations among different domains of life
Indicate whether the statement is true or false.
Answer: FALSE
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DNA replication is said to be semiconservative because ____
a. the number of nucleotides within genes remains constant b. half of the DNA in a cell comes from one parent and the other half from the other parent. c. the same process of DNA replication is used by all organisms d. the total amount of DNA within an individual remains the same e. each new DNA molecule is composed of one old strand and one new strand
The molecular reactants for photosynthesis are
A. glucose and sunlight. B. organic compounds. C. water and carbon dioxide. D. glucose and water. E. glucose and carbon dioxide.
A keystone species
a. has a disproportionately large effect on a community relative to its abundance b. controls the prey species. c. may increase or decrease the number of prey species in a community. d. has a disproportionately large effect on a community relative to its abundance, and may increase or decrease the number of prey species in a community. e. has a disproportionately large effect on a community relative to its abundance, controls the prey species, and may increase or decrease the number of prey species in a community.
A ________ trait is typically influenced by one or two genes
A) quantitative B) continuous C) polygenic D) multifactorial E) discrete