Recessive traits are expressed only in the homozygous state

a. True
b. False


ANSWER: True

Biology & Microbiology

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You digest DNA from the frog Xenopus laevis with the enzyme NotI that produces sticky DNA ends. You can ligate your DNA to:  

_____  blunt AluI ends from Xenopus laevis. _____    sticky NotI ends from Xenopus laevis. _____  blunt AluI ends from bacteria. _____  sticky NotI ends from bacteria. _____  sticky EcoRI ends from Xenopus laevis. _____  sticky EcoRI ends from bacteria.

Biology & Microbiology

Before Title IX was enforced, one myth that authorities embraced about women’s participation in competitive sports was that

a. Soviet women's gender had to be verified clinically b. their marriageability would be jeopardized c. black athletes were superior to white athletes d. There reproductive organs would be harmed

Biology & Microbiology

When Frederick Griffith infected mice with S. pneumoniae that lacked a capsule, the mice

A. remained healthy. B. reproduced quicker. C. died of pneumonia. D. became ill but lived.

Biology & Microbiology

The pouch of skin that encloses a human male's testes is called the ________.

A. epididymis B. semen C. acrosome D. vas deferens E. scrotum

Biology & Microbiology