Biology, 08.04.2021 19:50 kyronthomas52
The fruit fly Drosophila melanogaster has an allele that confers resistance to DDT and similar insecticides. Laboratory strains of D. melanogaster have been established from flies collected in the wild in the 1930s (before the widespread use of insecticides) and the 1960s (after 20 years of DDT use). Lab strains established in the 1930s have no alleles for DDT resistance. In lab strains established in the 1960s, the frequency of the DDT-resistance allele is 37%. Which statement is correct
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How have high taxes on tobacco products impacted the number of people who use them? a. the number of tobacco users has increased. b. the number of tobacco users has decreased. c. the number of tobacco users has not changed. d. the number of adolescent tobacco users decreased, while the number of adult users increased
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Biology, 22.06.2019 08:30
Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria
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The fruit fly Drosophila melanogaster has an allele that confers resistance to DDT and similar insec...
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