Recessive lethals are often mutations in essential genes
Indicate whether the statement is true or false
TRUE
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The larvae of some insects are merely small versions of the adult, whereas the larvae of other insects look completely different from adults, eat different foods, and may live in different habitats
Which of the following is most directly involved in the evolution of these variations in metamorphosis? A) artificial selection of sexually immature forms of insects B) changes in the homeobox genes governing early development C) the evolution of meiosis D) the development of an oxidizing atmosphere on Earth E) the origin of a brain
Metamerism refers to:
A. a body type that contains clearly distinguishable dorsal and ventral surfaces. B. the division of the body into a series of repeating segments. C. loss of crystalline structure of an amorphous state. D. None of the choices is correct.
Gene inactivation is likely to produce
A. pseudogenes. B. orthologs. C. paralogs. D. homologues. E. horizontal gene transfer (HGT).
In general, when sexual selection is strong for one sex and weak for the other, we can predict that members of the sex subject to strong sexual selection will be ________, and members of the sex subject to weak sexual selection will be ________
A) choosy; competitive B) aggressive; passive C) competitive; showy D) competitive; choosy