Download Midterm Practice II

Biology – TEST 03 REVIEW
Monday February 28, 2017
Perry High School
Notebook page: 55
Mr. Pomerantz__________________________________________________________________Page 1 of 4
Part I
1. Complete an illustration summarizing the amount of chromosome present in each cell during the two division of meiosis.
(Hint: you will start with one diploid cell and finish with four haploid cells.)
2. Draw a picture of homologous chromosomes. In which stage of meiosis will these homologous chromosome separate?
3. Create an image showing the difference between anaphase of mitosis and anaphase I of meiosis.
4. Explain the purpose of crossing over and create an image representing the process. Which stage of meiosis does crossing
over occur?
Using the information you have learned about cell reproduction, infer answers to the questions below about a cell with a
diploid number of 4 chromosomes. Select from among the diagrams below, labeled A, B, C, D, and E, to answer the
questions.
5. Which of the diagrams above depicts a cell at the beginning of mitosis?
6. Which of the diagrams above depicts a cell at the end of meiosis I?
7. Which of the diagrams above depicts a cell at the end of meiosis 2?
8. Which of the diagrams above depicts a cell at the end of mitosis?
Biology – TEST 03 REVIEW
Monday February 28, 2017
Perry High School
Notebook page: 55
Mr. Pomerantz__________________________________________________________________Page 2 of 4
Part II
9. The exchange of segments of DNA between the members of a pair of chromosomes is know as....
10. When does the separation of homologues occur?
11. Explain why crossing over provides new genetic combinations.
12. What four characteristics can indicate that two chromosomes homologous?
13. Explain the difference between gametes and somatic cells.
14. In which stage of meiosis do chromosomes separate at the centromere?
15. A human cell has 46 chromosomes. If human cell A undergoes mitosis and human cell B undergoes meiosis, how many
chromosomes will each resulting cell contain?
16. What would result if meiosis did not occur prior to sexual reproduction?
17. Write out Mendel's law of segregation.
18. If an individual possesses two recessive alleles for the same trait, the individual is said to be....
23. Two individuals, one heterozygous and one homozygous recessive for a trait crossed and produce many offspring that what
genotypes and phenotypes?
19. Mendel's finding that the inheritance of one trait had no effect on the inheritance of another became known as the
Biology – TEST 03 REVIEW
Monday February 28, 2017
Perry High School
Notebook page: 55
Mr. Pomerantz__________________________________________________________________Page 3 of 4
20. A Black dog and a white dog have a liter of eight puppies. All eight are gray. What type of traits is black and white?
21. What is the probability that the offspring of a homozygous dominant individual and a homozygous recessive individual will
exhibit the dominant phenotype?
22. A trait that occurs in 450 individuals out of a total of 1,800 individuals occurs with a probability of what?
23. Explain why a sex linked trait is more likely to appear in males versus females.
24. Define "sex-linked trait".
25. A karyotype shows a 3n number of chromosomes. This person is suffering from what condition?
26. Draw a chromosome and label the "p" and "q" arm. Describe how you can tell which arm is which.
Figure 2: Karyotype for individual X
27. How many chromosomes does this individual have? What is this individual's Haploid number?
Biology – TEST 03 REVIEW
Monday February 28, 2017
Perry High School
Notebook page: 55
Mr. Pomerantz__________________________________________________________________Page 4 of 4
28.
Define "non-disjunction" and create an image showing where in meiosis this can occur.
29. When do parents be at a greater risk for autosomal trisomy?
30. List two things the study of chromosome bands on a karyotype can help identify.
31. A karyotype with 92 chromosomes is best described as what type of "ploidy"?
32.Create a pie chart showing the relative amount of time humans have been on Earth compared to the Earth's history.
33. What evidence is there to suggest that being a bipedal hominid was a successful trait? What evidence is there to suggest it is
an unsuccessful trait?
34. Describe the role of genes in building an embryo.
35. What evidence suggests that “picaya" is a common ancestor? What is a "common ancestor"?
36. Which came first – leaving water or developing legs and fingers?
37. Create an image of a tetrapod?