Hereditary retinoblastoma is the result of a(n) ________ in the RB gene of chromosome 13 in both homologues.

A) insertion
B) duplication
C) inversion
D) point mutation
E) deletion


E) deletion

Biology & Microbiology

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The beneficial feature of economic development is that it is even across space

Indicate whether this statement is true or false.

Biology & Microbiology

The phylum ____ consists of about 200 known species of nonvascular plants that produce hornlike sporophytes, and

are the only land plants whose chloroplasts contain alga-like protein bodies called pyrenoids.

a. Hepatophyta b. Monilophyta c. Bryophyta d. Lycophyta e. Anthocerophyta

Biology & Microbiology

In M. xanthus, ________ motility is a kind of twitching that is governed by the production of retractable type IV pili, only observed when cells are in a group.

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

Biology & Microbiology

A person with a diet very low in iron may not be able to make enough of a formed element in the blood called ________

Fill in the blank(s) with correct word

Biology & Microbiology