Which of the following is the CORRECT order of gene groups expressed in normal Drosophila development? 1. Gap genes2. Homeotic genes3. Pair-rule genes4. Segment-polarity genes5. Egg-polarity genes A: 5, 1, 3, 4, 2 B: 1, 2, 3, 4, 5 C: 4, 2, 5, 1, 3 D: 3, 1, 2, 5, 4 E: 5, 2, 4, 3, 1

Constitutive genes are() A: genes that<br/>are expressed all the time. B: genes that<br/>are not expressed at all the time. C: genes that<br/>are expressed when needed. D: genes that<br/>are repressed.

Translate the following sentences into Chinese.Just as some biological genes can regulate other genes, some of the software genes can switch other software genes on or off.

Genes

中国大学MOOC: Egg-polarity genes directly regulate which group of genes?

What effect does eating genetically modified foods have on your genes （） A: It could cause your own genes to mutate B: It could cause your own genes to absorb the excess genes C: It has no effect on your genes D: The effects on human genetics aren't known

中国大学MOOC: The observation that some genes are mosaics of other genes can be explained by ______.

The author's main purpose in writing this passage is to ______. A: discuss the negative effects of patenting genes B: face possible moral consequences of patenting genes C: condemn the selfishness of researchers who patent genes D: weigh the advantages and disadvantages of patenting genes

If two genes from a parent cell are on the same chromosome, which of the following best explains why the daughter cells may not have the same alleles as the parent for both genes? A: they are linked genes B: they are unlinked genes C: crossing-over D: genetic mutation

Genes _________ happiness.