Which protein is defective in cases of Duchenne muscular dystrophy?

a. dystrophin
b. albumin
c. fibrillin
d. fibrinogen
e. fibrin


A

Biology & Microbiology

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Puppies born too large experience difficulties during birthing and tend to have respiratory and other problems. Puppies born too small often can’t compete with their siblings for their mother’s milk. Thus, puppies of intermediate size have a survival advantage. This is an example of ____ selection.

a. directional b. stabilizing c. disruptive d. frequency e. allelic

Biology & Microbiology

In a lichen, ________ produce sugars for the fungal partner

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is a trace mineral?

A) iodine B) sodium C) phosphorus D) sulfur

Biology & Microbiology

The Calvin cycle produces ________, not __________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology