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RELEASED

What advantage do sexually reproducing organisms have over asexually reproducing organisms?

A

genetic variation

B

genetic stability

C

increased fertilization rate

D

increased reproductive rate

Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children?

A

0% Hh : 100% hh

B

50% Hh : 50% hh

C

75% Hh : 25% hh

D

100% Hh : 0% hh

26.

North Carolina Test of Biology. Form I RELEASED Fall 2009

27.

NCDPI

Species Y always produces ethyl alcohol and CO2 . Which conclusion can be made from these observations?

A

Only Species Y is aerobic.

B

Only Species Y is anaerobic.

C

Both Species X and Y are aerobic.

25.

Two different species of bacteria are examined. Scientists find that Species X always produces CO2 and H2O during cellular respiration.

D

Both Species X and Y are

anaerobic.

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