Genotype is genetic make-up while heredity and environment combine to form the phenotype (observable characteristics).
a. true
b. false
true
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What was the energy source in the Miller-Urey simulation of conditions on the early Earth?
What will be an ideal response?
If a person has a recessive allele for a disorder and that allele is masked by the presence of a normal dominant allele, this person
A. is homozygous for the disease. B. cannot produce gametes. C. has the disease but cannot pass this disease to their offspring. D. is termed a carrier. E. is termed a linkage group.
Which of the following fossils is most like a
lobe-finned fish?
a. Tiktaalik b. Icthyostega c. Eusthenopteron d. Sinosauropteryx e. Confuciusornis
The part of the atom that has the greatest biological interest and interactions with other atoms is the
A) proton. B) innermost electron shell. C) neutron. D) electron.