FinalizedAnswer_Key__Prelim__2-1 - Answer KeyNOTE Yellow...

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Answer Key—NOTE Yellow highlighted changes to key. This key now contains the answers we will use to grade your scantrons. Essay Key is included at the end. 1. In the case of an endangered Hawaiian flowering plant discussed in your text, reduced to a population of one captive individual, the most plausible solution to the problem of conserving that species is: asexual reproduction encompassing mitosis 2. Which of the following is NOT an accurate statement of relationships and taxonomy? kangaroos and platypus are Marsupialia 3. Two chromosomes in a nucleus that carry loci for the same trait in the same positions on the chromosomes AND specify the same version of the same trait constitute a pair of: homologous chromosomes with identical alleles at that locus 4. Which of the following is a NOT a difference between mitosis and meiosis in human cells? in meiosis chromosomes are composed of sister chromatids at the start, whereas in mitosis they are not 5. In carnations, red or white phenotypes are dependent on homozygous genotypes, while the heterozygous are pink. Give the F2 phenotypic ratio for F1 self cross plants produced from a P1 cross of red and white plants. 1/4 red: 2/4 pink: 1/4 white 6. Imagine that tail length in a lizard species is genetically controlled. You mate a lizard homozygous for very long tail (ll) with a lizard homozygous for very short tail (LL), and among numerous offspring observe that about a fourth of the them have long tails and the rest have short tails. This pattern of phenotypic expression is most likely an example of which of the following? All answers will be given credit 1
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7. Imagine that tail length in a rat species is controlled by a single gene, that sequential crosses of long-tailed parents yield all long-tailed rats in the F1 generation and some short-tailed rats in the F2 generation. The likely genotypes of the rat parents P1 were: heterozygous father, heterozygous mother 8. The most likely factor or factors in the evolution of the distinctive foot color apparent in both sexes of Blue-footed Boobies is (are): All answers, EXCEPT, “Avoidance of genetic drift” will receive credit 9. The closest living RELATIVES OF the taxonomic group that includes lizards, the platypus, and sea stars is a group called: Protostomes” and “Deuterostomes” will receive credit 10. Which of the following groups of animals contains the MOST species? Chiroptera
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This note was uploaded on 10/28/2008 for the course BIO G 109 taught by Professor Winkler,d. during the Fall '06 term at Cornell.

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FinalizedAnswer_Key__Prelim__2-1 - Answer KeyNOTE Yellow...

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