A male fruit fly (Drosophila melanogaster) with red eyes and long wings was mated with a female with purple
eyes and vestigial wings. All of the offsprings in the F1 generation had red eyes and long wings. These F1
flies were test crossed with purple eyed, vestigial winged flies. Their offspring, the F2 generation, appeared
as indicated below.
125
124
18
red eyes, long wings
purple eyes, vestigial wings
purple eyes, long wings
red eyes, vestigial wings
Total
16
283
If in the F1 and F2 generations the same characteristics appeared in both male and females, it would be safe
to assume that these traits for eye color and wing length
a. are sex-linked.
b. vary in dominance according to sex.
c. are sex-influenced characteristics.
d. follow the Mendelian rule of independent assortment.
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Answer:
1. Know the sequence of events in DNA replication
2. Know the sequence of events in Protein synthesis
3. Know mendelian genetics terminology; dominant, recessive, homozygous, heterozygous, F1, F2, P1, genotype, phenotype, alleles, traits
4. Be able to construct a simple punnett square.
5. Be able to read a pedigree chart and be able to make predictions using a pedigree chart.
6. Compare and contrast Meiosis and Mitosis
7. What is the connection between... DNA and Genes, Genes and Chromosomes, mutation and variation, RNA and DNA, Amino Acids and protein, DNA and protein.
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