Which of the following is/are true of Hox genes?
A. they control the locations of specific parts of the body plan of plants and animals, such as the locations of eyes, limbs, or leaves
B. they are evolutionarily conserved in all animals except sponges
C. they activate expression of genes which control development of body segments
D. they are chemical signals present in the unfertilized egg
E. changes in Hox genes has contributed to rapid diversification of animal lineages
Answer:
B. they are evolutionarily conserved in all animals except sponges
C. they activate expression of genes which control development of body segments
E. changes in Hox genes has contributed to rapid diversification of animal lineages
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A) simple stain B) spore stain C) negative stain D) acid-fast stain
Which of the following statements is true?
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A) using the Krebs cycle. B) fermenting. C) photosynthesizing. D) using proteins. E) dead.
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Indicate whether the statement is true or false.