One predicted aspect of climate change is that climates, including precipitation and temperature, over most of the Earth will become more variable. Which of the following is a good crop genetic engineering strategy if this is true?
A) Only plant crops that are genetically engineered.
B) Genetically engineer most crops to withstand very long droughts.
C) Genetically engineer several genotypes within single crop types.
D) Genetically engineer the fastest growing crops possible.
C
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If one strand of a DNA molecule has the sequence of bases 5'ATTGCA3', the other complementary strand would have the sequence _____
A) 5'TAACGT3' B) 5'TGCAAT3' C) 5'UAACGU3' D) 3'UAACGU5' E) 5'UGCAAU3'
A hydrogen bond is
a. a sharing of a pair of electrons between a hydrogen and an oxygen nucleus. b. a sharing of a pair of electrons between a hydrogen nucleus and either an oxygen or a nitrogen nucleus. c. an attractive force that involves a hydrogen atom and an oxygen or a nitrogen atom that are either in two different molecules or within the same molecule. d. none of these. e. all of these
In which of these flower parts does meiosis
take place?
a. calyx b. corolla c. stigma d. anther e. style
Four of these factors play a role in phylogeny. Which one does not?
a. number of digits b. DNA sequence for a gene c. amino acid sequence of an enzyme d. number of petals e. number of individuals