A chromosome's gene sequence that was

ABCDEFG before modification and
ABCDCDEFG afterward is an example of
a. inversion.
b. deletion.
c. duplication.
d. translocation.
e. aneuploidy.


C

Biology & Microbiology

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A scientist fused a mouse cell and a human cell, then treated the cell with specific antibodies covalently linked to

colored fluorescent dyes (antibodies to mouse proteins were labeled green; antibodies to human proteins were labeled red). Forty minutes later, what will the researcher observe?

a. The fused cell will still be half red and half green. b. The red and green fluorescent labels will be uniformly distributed throughout the entire membrane. c. The red and green labels will be distributed in intermingled patches. d. The red and green labels will flash intermittently. e. The red and green labels will be distributed in a swirling pattern.

Biology & Microbiology

If long or round are homozygous forms of an

incompletely dominant gene, and oval is the phenotype of the heterozygote, give the F2 ratio of the cross between long and round (both genotype and phenotype). What will be an ideal response?

Biology & Microbiology

DNA moves within an electric field because it

A) is negatively charged. B) is positively charged. C) makes up chromosomes, which are slightly electromagnetic. D) can possess different charges (positive or negative), depending on its base sequence.

Biology & Microbiology

Intermittent sterilization by non-pressurized moist heat is also called

A. boiling B. Tyndallization C. Pasteurization. D. Denaturation

Biology & Microbiology