Tightly curled or wooly hair is caused by a dominant gene in humans. If a heterozygous curly-haired person marries a person with straight hair, what percentage of their offspring would be expected to have straight hair?
A) 75% curly
B) 50% straight
C) 25% curly
D) 100% straight
E) It is impossible to predict the outcome.
Answer: B
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The bilaterians animals are divided into two monophyletic groups, the _____ and the _____, which are supported by patterns of comparative anatomy, comparative embryology, and molecular sequence data
A. Protostomia and Deuterostomia B. Lophotrochozoa and Ecdysozoa C. Chordata and Hemichordata D. Eumetazoa and Protozoa
Gonococci infect
A. cows. B. iguanas. C. sheep. D. humans. E. cows AND sheep.
Compare two environments at 45° N latitude: environment A's altitude is 50 meters and environment B's altitude is 3000 meters. Which environment will support the greater level of species richness for mammals and birds?
A) Environment A will have the greater level of species richness. B) Environment B will have the greater level of species richness. C) Environments A and B will have the same species richness.
A quick warming of chicken or eggs is enough to kill Salmonella.
Answer the following statement true (T) or false (F)