University:
Cameron University
Course:
1004 | General Biology
Academic year:

2024
Views:

208

Pages:

2
Author:

Alma Stephenson

Homologous pairs of chromosomes are lined up independently of other such pairs during _____. A. metaphase II B. anaphase I C. metaphase I D. prophase II E. telophase II C. metaphase I Crossing over, resulting in an increase in genetic variation, occurs between _____. A. nonsister chromatids of nonhomologous chromosomes B. sister chromatids of nonhomologous chromosomes C. nonsister chromatids of homologous chromosomes D. sex cells and somatic cells E. sister chromatids of homologous chromosomes C In human gamete production there is an average of _____ crossover events per chromosome pair. A. 2-3 B. 9-10 C. 5-6 D. 0-1 E. 10+ A. 2-3 Which of these gametes contain one or more recombinant chromosomes? 1. B, C, and G 2. B, C, F, and G 3. C, D, E, F, and G 4. A, B, and C 5. B, C, D, and G 2. B, C, F, and G Different finch species have beaks of different shapes and sizes. What do these beak differences tell us? A. Different finch beak shapes are evidence that finch species adapted to different environments over many generations. B. Different finch beak shapes are evidence that several finch species with different beak types came to the Galápagos Islands from the mainland. C. Different finch beak shapes are evidence that all Galápagos finches share a common ancestor. D. Different finch beak shapes are evidence that individual birds changed their beaks so that they could feed efficiently. A Genetic evidence supports which of the following explanations for the presence of 13 different finch species on the Galápagos islands? A. Many years ago, more than 13 different species of birds migrated to the islands. The current 13 finch species are the only species that survived. B. Each of the 13 species migrated to the islands at different times over the years. C. Many years ago, a small population of a single finch species migrated to the islands and evolved into the current 13 species. D. The 13 species have existed on the Galápagos islands since the islands first formed. C