The ________ from Agrobacterium tumefaciens is used in genetic engineering involving crop plant genes.

A. Ti plasmid
B. DNA
C. Ti vector
D. restriction endonucleases


Answer: A

Biology & Microbiology

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Multiple sensory receptors can synapse on a single neuron. The receiving neuron has a firing rate proportional to the number of signals received. Which of the following is this an example of?

A. temporal summation B. spatial summation C. action potential D. hyperpolarization

Biology & Microbiology

Suppose you discovered a new mutation in mice that causes a curved spine. You noticed that this mutant phenotype is present only in females. When curved-spine females are crossed with normal males, the progeny are always recovered in a 1:1:1 ratio of curved-spine females, normal females, and normal males. Explain the genetic basis for this ratio.

A) hemizygous or homozygous lethal autosomal allele B) hemizygous or homozygous lethal sex-linked allele C) recessive sex-linked allele D) recessive autosomal allele E) dominant sex-linked allele

Biology & Microbiology

Why are agricultural GMOs developed?

What will be an ideal response?

Biology & Microbiology

A sustainable society is able to provide the same amount of goods and services for future generations as it does for the current one, while preserving biodiversity.

Answer the following statement true (T) or false (F)

Biology & Microbiology