A group of interbreeding individuals and their offspring is known as a(n) ________
Fill in the blank(s) with correct word
population
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Cilia in eukaryote cells can
A. assist digestive tract cells in absorbing food molecules. B. move in unison to establish a current to move objects, as with human eggs through the reproductive tract. C. beat in unison to help a single cell, such as a protist, to swim. D. add surface area for senses such as taste, smell, balance, and hearing. E. be used in eukaryotes to do any of these functions.
Is the accompanying figure DNA or RNA? Is the circle closer to the 5' or 3' end?
What will be an ideal response?
In each fly species, the entire body segment that gave rise to the original flight wings is missing. The mutation(s) that led to the flightless condition could have _____
A) duplicated all of the Hox genes in these flies' genomes B) resulted in paedomorphosis C) altered the expression of a Hox gene D) originated in another species
Which of the following statements does NOT correctly describe differences between larval and adult tunicates?
A. Larval tunicates have a conspicuous notochord that is lost by the time they become adults. B. Larval tunicates have a hollow dorsal nerve cord that is reduced to only a ganglion in the adult. C. The tail of the larval tunicate is lost by the time it transforms into an adult. D. The pharynx of the larval tunicate becomes more prominent in the adult. E. The larval tunicate lacks an incurrent and excurrent siphon but the adult has both structures.