Cellular reproduction and chromosomes
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Cellular Reproduction and Chromosomes. Chapter Five: Cellular Reproduction and Chromosomes 5.1 and 5.2 (5.3 after the last slide). 1. What is the continuous sequence of growth and division known as?. The Cell Cycle. 2. True or False? The growth stage is known as Mitosis.

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Cellular Reproduction and Chromosomes

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Cellular Reproduction and Chromosomes

Chapter Five: Cellular Reproduction and Chromosomes

5.1 and 5.2 (5.3 after the last slide)

1. What is the continuous sequence of growth and division known as?

  • The Cell Cycle

2. True or False? The growth stage is known as Mitosis.

  • False- The growth stage is known as interphase.

3. The division of a cell’s nucleus is known as

  • A. Meiosis

  • B. Mitosis

  • C. Metaphase I

  • D. Prophase I

4. What is each chromosome made up of?

  • Two sister chromatids

5. Gametes, either egg or sperm, are ___ which means they contain only one copy of each type of chromosome that the diploid parent cell contains.

  • Haploid

6. Give examples of mitosis.

  • When a starfish loses an arm as a result of an attack by a predator, a new arm is regenerated by the process of mitosis.

  • Cells that do not function properly are replaced by mitosis.

  • Cells are replaced when they die through mitosis.

7. True or False? The centromere within the nucleus holds the genetic info needed to maintain the cell and to make new copies of the cell.

  • False- chromosomes

8. What does the centromere do?

  • Holds together the sister chromatids

9. The _____ cell divides to produce two new _____ cells.

  • Parent, daughter

10. How many chromosomes do all human somatic (body) cells have?

  • A. 24

  • B. 21

  • C. 42

  • D. 46

11. What are the four phases of mitosis?

  • Prophase

  • Metaphase

  • Anaphase

  • Telophase

12. What happens before mitosis begins?

  • Interphase

13. During which phase of mitosis do the chromatids reach the two opposite poles within the cell?

  • Telophase (the 4th phase)

14. During which phase of mitosis do the spindle fibres attach to the centromere of the replicated chromosomes?

  • Metaphase (the 2nd phase)

15. During which stage of mitosis does chromatin condense and thicken to form visible duplicated chromosomes?

  • Prophase (the 1st phase)

16. During which phase of mitosis are the chromatids pulled to opposite poles of the cell?

  • Anaphase (the 3rd phase)

17. What is the separation of the cytoplasm and the formation of two new daughter cells called?

  • A. Cytokinesis

  • B. Mitosis

  • C. Meiosis

  • D. Genetic Variation

18. What are some of the causes of mutations?

  • Various mutagens such as toxic compounds (smoke, chemicals, etc), radiation or viruses

19. What are genes called that can be activated by a mutation?

  • Oncogenes

20. True or False? Meiosis is a special type of cell division that occurs only in reproductive organs.

  • True

21. True or False? The first part of meiosis that reduces the chromosome number from diploid to haploid is known as crossing over.

  • False- Reduction Division

22. How many autosomes and sex chromosomes does each human sperm or egg cell contain?

  • A. 20 autosomes, 2 sex chromosomes

  • B. 24 autosomes, 1 sex chromosome

  • C. 22 autosomes, 1 sex chromosome

  • D. 22 autosomes, 2 sex chromosomes

25. True or False? Homologous chromosomes are identical.

  • False- similar but not identical

26. What type of chromatids do not belong to the same chromosome and undergo crossing over?

  • Non-sister chromatids

27. True or false?The random positioning of tetrads along the cell’s equator is called crossing over.

  • False – independent assortment

  • True or false?The production of gametesis known as gametogenesis.

  • True

29. The process of male gamete production in animals is called ________, and the female gamete production is called ______?

  • Spermatogenesis, Oogenesis

30. The re-assortment of chromosomes and genes carried through crossing over is known as _______?

  • Genetic recombination

31. The diploid germ cells that start Oogenesis and spermatogenesis are called _______?

  • A) Ooganius, Spermaganius

  • B) Egg, Sperm

  • C) Oogonium, Spermatogonium

  • D) Oogoogle, Spermagoogle

32. True or false?The failure of chromosomes to separate properly is known as nonjunction.

  • Trisomy

  • False - Nondisjunction

33. What is it called when all the cells that develop from the zygote have an extra chromosome?

34. True or false?A zygote containing three sets of chromosomes is called polyploid, and an organism having more than two sets of chromosomes are called triploid.

  • False – triploid, polyploid

35. True or false? The transmission of genes that are located on one of the sex chromosomes is called chromosome theory of inheritance.

  • False – sex–linked inheritance

36. The combined research of Mendel, Sutton, and Boveri formed the basis of what?

  • Chromosome theory of inheritance

37. What is the inactivated X chromosome called?

  • A) Barr body

  • B) Golgi body

  • C) Barrd body

  • D) Carr body

38. What are Punnett squares used for?

  • To predict the outcome of crosses of genes.

39. What is it called when many traits are controlled by more than one gene?

  • Polygenic Inheritance

40. What is a range of variation in a trait called?

  • A. Modifier genes

  • B. Continuous variation

  • C. Variation genes

  • D. Modifier traits

You got it!

39. Give an example of a trait in humans that involves modifier genes.

  • Eye color

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