If it were found that all animals except the Parazoa had a particular set of genes, one could conclude
A. that those genes are not useful in interpreting phylogeny.
B. that Darwin was incorrect in his idea about descent with modification.
C. that the Parazoa are not animals.
D. that those genes probably are related to the embryonic formation of tissues.
E. that those genes are related to cell wall formation.
D. that those genes probably are related to the embryonic formation of tissues.
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What type of sensory receptor is a hair cell?
A. nociceptor B. electroreceptor C. mechanoreceptor D. chemoreceptor
The noncoding regions of a primary mRNA transcript that interrupt coding regions are known as:
A. exons. B. introns. C. poly(A) tails. D. 5' caps.
If auxin transport was limited at shoot tips, what would occur?
A. It would have no effect on leaf formation. B. It would result in increased formation of leaf primordia at many locations. C. Leaf primordia formation would be limited to the cells where auxin was transported. D. No new leaves would form.
Because of its function, this hormone is often called interstitial cell-stimulating hormone
A) LH B) inhibin C) FSH D) GnRH