Unit A Reproduction

More documents

Recommendations

Info

Use What You’ve Learned 16. (a) What happens to the sister chromatids during meiosis? (b) How is this different than what happens during mitosis? 17. Figure 3 compares mitosis and meiosis in a cell that contains 32 chromosomes. (a) How many chromosomes would be found in cell A? (b) How many chromosomes would be found in cell C? (c) How many chromosomes would be found in cell D? (d) Which cells would be haploid? A Figure 3 Mitosis Meiosis 32 32 B 18. Compare the end products of mitosis and meiosis. 19. Describe what happens to the end products of mitosis and meiosis. 20. Describe the types of alleles that are found in the cells of a human with a straight hairline. 21. What advantages does the asexual reproduction of plants have for a farmer? Could this ever be a disadvantage? Explain. Think Critically 22. Bacteria and humans both reproduce sexually. Explain how the outcomes are different. 23. Hermaphrodites contain both male and female reproductive organs, and both parents produce offspring. Why is this considered to be sexual reproduction? 24. Using your knowledge of gametes and chromosome numbers and types, explain why sexual reproduction can produce a variety of traits in individuals of the same species. D E C 25. Choose one form of vegetative reproduction, and explain how it is used in agriculture. 26. Scientists use the process of recombinant DNA to produce useful drugs for humans. Identify the organism that is most commonly used. Explain how the ability to reproduce both asexually and sexually is important for recombinant DNA technology. 27. Choose three organisms that use internal fertilization. Research their method of reproduction, and compare them in terms of the following: • how sperm reaches the egg • the approximate number of offspring produced • the environmental conditions of the offspring following birth www.science.nelson.com 28. Many fruits that we eat are seedless. How do these plants reproduce without seeds? 29. Some countries ban the use of GMOs in human food. Research three examples of GMOs in food in Canada, and what the risks and benefits of each are. www.science.nelson.com 30. Growing canola that is genetically modified to resist a herbicide, such as Roundup, is controversial. Use the Internet and other sources to research the pros and cons of herbicide-resistant crops. www.science.nelson.com GO GO GO Reflect on Your Learning 31. How could you improve the way that you conduct investigations? How would these changes affect that data you collect? 32. In this chapter, you learned about sexual reproduction from a biological perspective. Has this information changed your ideas about what sexual reproduction is? Explain your answer. Visit the Quiz Centre at www.science.nelson.com GO NEL Chapter 3 Review 105
CHAPTER 4 Human <strong>Reproduction</strong> KEY IDEAS Male and female humans have specialized organs to produce gametes and to ensure fertilization. It takes nine months for a human to develop from a zygote into a baby. Sex chromosomes determine the gender of the offspring. Errors in meiosis can result in changes to both the gametes and the offspring. Scientists have developed technologies that can identify potential problems and allow humans to produce offspring successfully. 106 NEL
Page 1 and 2:
32 NEL
Page 3 and 4:
CHAPTER 2 Cell Growth and Reproduct
Page 5 and 6:
2.1 The Importance of Cell Division
Page 7 and 8:
2.1 CHECK YOUR Understanding 1. Giv
Page 9 and 10:
Figure 2 Plant cell structures cyto
Page 11 and 12:
2.3 From DNA to Proteins You have l
Page 13 and 14:
Did You KNOW? The Human Genome The
Page 15 and 16:
LEARNING TIP Think about the sectio
Page 17 and 18:
USING MITOCHONDRIAL DNA TO SOLVE MY
Page 19 and 20:
centrioles nucleus chromosome spind
Page 21 and 22:
2.4 CHECK YOUR Understanding 1. Wha
Page 23 and 24: LEARNING TIP Make connections to yo
Page 25 and 26: 2.5 CHECK YOUR Understanding 1. Wha
Page 27 and 28: Binary fission allows for rapid pop
Page 29 and 30: 2.6 CHECK YOUR Understanding 1. At
Page 31 and 32: could clone frogs, they were unable
Page 33 and 34: 2A Investigation Observing Cell Div
Page 35 and 36: 2B Investigation Determining the Ra
Page 37 and 38: CHAPTER 2 Review Cell Growth and Re
Page 39 and 40: Review Key Ideas and Vocabulary 1.
Page 41 and 42: CHAPTER 3 Sexual Reproduction KEY I
Page 43 and 44: 3.1 Meiosis LEARNING TIP Scan the t
Page 45 and 46: Interphase Prophase Metaphase Anaph
Page 47 and 48: 3.1 CHECK YOUR Understanding 1. How
Page 49 and 50: allele for straight hairline homolo
Page 53 and 54: If you would like to learn more abo
Page 55 and 56: Figure 5 Male and female cones are
Page 57 and 58: 3.4 Development of the Zygote 3B In
Page 59 and 60: Eggs The vast majority of animals l
Page 61 and 62: 3.4 CHECK YOUR Understanding 1. Nam
Page 63 and 64: LEARNING TIP Photographs play an im
Page 65 and 66: TRY THIS: A Model of Recombinant DN
Page 67 and 68: 3A Investigation Examining Flowers
Page 69 and 70: 3B Investigation Examining Seeds Re
Page 71 and 72: CHAPTER 3 Review Sexual Reproductio
Page 73: Review Key Ideas and Vocabulary 1.
Page 77 and 78: 4.1 The Male Reproductive System LE
Page 79 and 80: LEARNING TIP Did you notice that Se
Page 81 and 82: 4.2 The Female Reproductive System
Page 83 and 84: Depending on whether the egg is fer
Page 85 and 86: 4.2 CHECK YOUR Understanding 1. Lis
Page 87 and 88: amniotic fluid placenta umbilical c
Page 89 and 90: Figure 7 The zygote has divided sev
Page 91 and 92: CORD BLOOD: BIOLOGICAL INSURANCE Sc
Page 93 and 94: Figure 2 The X chromosome (a) is fa
Page 97 and 98: Figure 2 The karyotype of Down synd
Page 99 and 100: 4.6 Prenatal Procedures (a) (b) Fig
Page 101 and 102: 4.6 CHECK YOUR Understanding 1. Nam
Page 103 and 104: 4.7 Reproductive Technologies LEARN
Page 105 and 106: 4.7 CHECK YOUR Understanding 1. At
Page 107 and 108: Sample Stakeholder Perspectives •
Page 109 and 110: CHAPTER 4 Review Human Reproduction
Page 111 and 112: Review Key Ideas and Vocabulary 1.
Page 113 and 114: UNIT A Review Reproduction Unit Sum
Page 115 and 116: 15. Complete the following table to
show all

Unit A Reproduction

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?