If an organism has two copies of each chromosome, it is

A. aneuploidy.
B. diploid.
C. haploid.
D. tetraploid.
E. polyploidy.


B

Biology & Microbiology

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In this figure, the magnitude of the secondary response is due to ____________________

a. the presence of memory cells b. the presence of antibodies that remain in the body after a first-time infection c. the activity of killer T-cells d. antibodies introduced when someone receives a vaccination

Biology & Microbiology

The mosses, liverworts, and hornworts are

members of which group?

a. conifers b. ferns c. gymnosperms d. bryophytes e. angiosperms

Biology & Microbiology

Which pairs of people would provide the most useful information to geneticists, regarding the heritability of a certain trait?

A) non-twin siblings separated into different households soon after birth B) monozygotic twins separated into different households soon after birth C) non-twin siblings raised in the same household since birth D) monozygotic twins raised in the same household since birth

Biology & Microbiology

The primary function of the blood is 

A. transportation. B. metabolism. C. increasing temperature. D. to supply the lymphatic system.

Biology & Microbiology