What is the correct order of gene expression in the early Drosophila embryo?  

A.  pair-rule genes, gap genes, segment polarity genes
B.  gap genes, pair-rule genes, segment polarity genes
C.  gap genes, segment polarity genes, pair-rule genes
D.  segment polarity genes, pair-rule genes, gap genes


B.  gap genes, pair-rule genes, segment polarity genes

Biology & Microbiology

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The first terrestrial animals were probably

A) reptiles. B) arthropods. C) dinosaurs. D) mammals. E) amphibians.

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Having an abnormally small number of platelets in the circulating blood is known as ___________

Fill in the blank(s) with the appropriate word(s).

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The disease responsible for the death of approximately ¼ the population of Europe from 1346 to 1350 was

A. typhus. B. pneumonia. C. influenza. D. plague.

Biology & Microbiology

________ is activism with a stated aim of protecting the natural environment, particularly from the negative impacts of human activities

Fill in the blank(s) with correct word

Biology & Microbiology