Which of the following immunodeficiency disorders could possibly be treated or prevented by gene therapy during the embryological stage?

A. AIDS
B. X-linked agammaglobulinemia (XLA)
C. Asthma
D. None of these disorders can be treated by gene therapy during the embryological stage.


Answer: B

Biology & Microbiology

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Respond to statements 99–103 with reference to the organ

systems listed below. a. circulatory b. lymphatic c. digestive d. endocrine e. respiratory E 99. the first line of defense against infectious bacteria found in food E 100. involved in the immune response M 101. initially encounters airborne pathogens E 102. distributes antibodies throughout the body E 103. recovers excess tissue fluid

Biology & Microbiology

Which of the following statements is true regarding the involvement of sexual selection on male function (pollen donation) leading to sexual dimorphism in flowers?

A) Female flowers typically receive far more pollen than is needed to fertilize their seeds. B) Delph and colleagues (1996 ) found that out of 42 animal-pollinated plant species, 29% of females had the largest reproductive parts, but males had the largest perianths. C) Studying wild radishes, Stanton and colleagues (1996 ) found that reproductive success through pollen donation was limited by pollinator visits, whereas reproductive success through seed production was not. D) All of the above statements are true.

Biology & Microbiology

Coral obtains energy

A. by capturing and digesting small animals and through symbiosis with photosynthetic algae. B. by performing photosynthesis and capturing and digesting small animals. C. by capturing and digesting small animals. D. through symbiosis with photosynthetic algae.

Biology & Microbiology

In a particular system, what kind of energy is considered available to do work? Which of the following is correct?

a. Entropy b. Gibbs energy c. Willard energy d. Kinetic energy

Biology & Microbiology