In the early 1900s, two scientists noted there were many more genes than chromosome pairs, thus setting the stage for the suggestion that some gene loci might be linked during meiotic processes. Who were these two scientists?
What will be an ideal response?
Walter Sutton and Theodor Boveri
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An embryo sporophyte surrounded by nutritive tissue and a tough, protective outer coating makes up a(n) ____
a. pollen grain b. spore c. ovule d. seed e. strobilus
Cord blood can be harvested from the umbilical cord of a newborn but can only provide red blood cell replacement in case of needed therapy or damage.
a. true b. false
What are the non-coding sequences in pre-mRNA?
a. promoter b. nucleotide cap c. introns d. transcript e. exon
Which of the following are potential problems with Genetically Modified (GM) crops and food?
a) Crops carrying genes from other species might harm the environment. b) GM foods could be hazardous to human health. c) Transgenic plants might pass their genes to close relatives in nearby wild areas. d) all of the above e) none of the above