Which of the following statements regarding lethal genes is TRUE?
a. On average, people carry 6-8 lethal genes.
b. Lethal genes are usually dominant genes.
c. Only a very few lethal genetic disorders are caused by recessive lethal genes.
d. Dominant lethal genes most often express themselves in spontaneous abortions and
stillborn babies.
e. Recessive lethal genes are only expressed when paired with a dominant lethal gene.
d. Dominant lethal genes most often express themselves in spontaneous abortions and
stillborn babies.
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