Preview Science Concepts Using Science Graphics Writing Skills.

Slides:

Advertisements

Similar presentations

Meiosis And Sexual Life Cycle

Advertisements

Meiosis Review.

Chapter 11 Meiosis and Sexual Reproduction

 Sexual Reproduction – type of reproduction in which the genetic materials from two different cells combine, producing an offspring  Sperm – male sex.

Chapter 13 Meiosis. Terms – Heredity Transmission of traits to offspring – Variation Genetic variation in population – Genetics Study of heredity – Genes.

Diagram a cell with four chromosomes going through meiosis.

CELL REPRODUCTION MEIOSIS.

Chapter 13 Meiosis and Sexual Life Cycles

REPRODUCTION Reproduction – The process of producing offspring

1 Meiosis and genetic variation. Introduction 2 3 Genes DNA is organized in chromosomes. –Genes have specific places on chromosomes.

What is mitosis? The way cells divide to produce more body cells.

Sexual Life Cycles: Meiosis

MEIOSIS AND SEXUAL REPRODUCTION CONTINUITY – Genetic information passes from generation to generation GENETIC VARIATION – differences between individuals;

Welcome! Monday, 1/14 Gametes – sperm and egg are gametes Gene – A section of DNA that codes for a protein Chromosome – Visable DNA Chromatids – two exact.

Ch. 6 (p ). In chapter 5 you have learned that through asexual reproduction one parent can produce genetically identical offspring. Sexual reproduction.

Warm up 1. Compare sexual to asexual reproduction. 2. What are homologous chromosomes? 1. Describe what major processes occur during a sexual life cycle.

You have body cells and gametes.

Chapter 13: Meiosis & Sexual Life Cycles. What you must know The difference between asexual and sexual reproduction. The role of meiosis and fertilization.

Meiosis and Sexual Reproduction

Meiosis and Sexual Reproduction Section 1 Section 2 Meiosis Sexual Reproduction.

Ways to show the number of chromosomes in a cell. 2n 2 copies of each chromosome Body cells n 1 copy of each chromosome Sex cells DIPLOIDHAPLOID.

6.6 Meiosis and Genetic Variation KEY CONCEPT Independent assortment and crossing over during meiosis result in genetic diversity.

Chapter 11-4 Meiosis. Let’s make a sex cell! Meiosis – Production of haploid gametes Meiosis – Production of haploid gametes Diploid- has paired chromosomes.

CHAPTER 13 SEXUAL LIFE CYCLES: MEIOSIS OFFSPRING ACQUIRE GENES FROM PARENTS BY INHERITING CHROMOSOMES.

Sperm and egg. Chapter 10 - MEIOSIS. Figure 10.1a The word chromosome comes from the Greek χρ ῶ μα (chroma, colour) and σ ῶ μα (soma, body) due to their.

Ms. Hughes.  Reproduction is the process of producing offspring.  An individual formed by asexual reproduction is genetically identical to its parent.

11-4 MEIOSIS. What is it? Meiosis the production of haploid cells with unpaired chromosomes - word means "to diminish".

6.1 Chromosomes and Meiosis

Warm up Compare sexual to asexual reproduction.

Meiosis Review.

Cell Division – Meiosis

Bellringer What is happening in metaphase?

Station 1: Salmon life Cycle

Meiosis and Sexual Reproduction

MEIOSIS Creating gametes (sex cells).

Day one of Meiosis.

Meiosis & Sexual Life Cycles

Meiosis Chapter 10.1 and 11.3.

Asexual vs. sexual reproduction

Mitosis and Meiosis When Cells Divide.

Mitosis vs. Meiosis.

Reproduction, Mitosis, Meiosis

Meiosis and Sexual Reproduction

Reproduction, Mitosis, Meiosis

Cell Cycle The cell cycle consists of three phases:

Sexual Reproduction Parents: 2 Offspring: different

Mechanisms of Evolution

MEIOSIS AND SEXUAL LIFE CYCLES OVERVIEW

Reproduction, Mitosis, Meiosis

How do organisms create offspring through sexual reproduction?

Meiosis Chapter 10.1 and 11.3.

Biology Chapter 6 Dr. Altstiel

Start-up for 12/9/14 Refer to the karyotype on the right. Is this a male or female? Explain. What are autosomes? Which chromosomes in this karyotype.

Meiosis Chapter 10.1 and 11.3.

Ways to show the number of chromo-somes in a cell.

Meiosis and Sexual Reproduction.

Chapter Meiosis.

Mitosis and Meiosis When Cells Divide.

You have body cells and gametes.

Meiosis End ch. 8.

GENETIC VARIATION Sources of Variation.

Intro to Meiosis.

Comparing Mitosis and Meiosis

Genes, Alleles, and meiosis

For a species to survive, it must REPRODUCE!

Station 1: Salmon life Cycle

Presentation transcript:

Preview Science Concepts Using Science Graphics Writing Skills

1. Which of the following sex chromosomes do human females have? A. XY B. XX C. YY D. XO

1. Which of the following sex chromosomes do human females have? A. XY B. XX C. YY D. XO

2. If the diploid chromosome number of a species is 24, then a cell with 12 chromosomes would be F. a zygote. G. a polyploid cell. H. a haploid cell. J. a diploid cell.

2. If the diploid chromosome number of a species is 24, then a cell with 12 chromosomes would be F. a zygote. G. a polyploid cell. H. a haploid cell. J. a diploid cell.

3. The random distribution of homologous chromosomes during meiosis is called A. fission. B. budding. C. crossing-over. D. independent assortment.

3. The random distribution of homologous chromosomes during meiosis is called A. fission. B. budding. C. crossing-over. D. independent assortment.

4. In addition to the genetic variability produced during meiosis, sexual reproduction generates genetic variability as a result of F. mitosis. G. spore formation. H. random fertilization. J. harsh environments.

4. In addition to the genetic variability produced during meiosis, sexual reproduction generates genetic variability as a result of F. mitosis. G. spore formation. H. random fertilization. J. harsh environments.

5. Sperm formation produces A. four diploid cells. B. four haploid cells. C. four polar bodies. D. two haploid cells.

5. Sperm formation produces A. four diploid cells. B. four haploid cells. C. four polar bodies. D. two haploid cells.

6. In a haploid sexual life cycle, meiosis occurs F. at any stage in the life cycle. G. in cells of multicellular individuals. H. immediately after a zygote is formed. J. at the time when an individual reaches its mature size.

6. In a haploid sexual life cycle, meiosis occurs F. at any stage in the life cycle. G. in cells of multicellular individuals. H. immediately after a zygote is formed. J. at the time when an individual reaches its mature size.

The graph shows chromosome number for different animals The graph shows chromosome number for different animals. Use the diagram to answer the following question(s). 7. How many chromosomes are in a frog gametes? A. 13 B. 20 C. 26 D. 62

The graph shows chromosome number for different animals The graph shows chromosome number for different animals. Use the diagram to answer the following question(s). 7. How many chromosomes are in a frog gametes? A. 13 B. 20 C. 26 D. 62

F. dog G. frog H. corn J. human The graph shows chromosome number for different animals. Use the diagram to answer the following question(s). 8. Which organism has 10 chromosomes in one of its gametes. F. dog G. frog H. corn J. human

F. dog G. frog H. corn J. human The graph shows chromosome number for different animals. Use the diagram to answer the following question(s). 8. Which organism has 10 chromosomes in one of its gametes. F. dog G. frog H. corn J. human

D. ABcdE, ABcdE, aBCDE, aBCde The diagram shows chrossing over of two chromatids. Use the diagram to answer the following question(s). 9. After crossing-over as shown, what would the sequence of genes be for each of the chromatids? A. ABcdE, ABcde, aBCDE, aBCDe B. ABEcd, ABcde, aBCDE, C. ABcdE, ABcde, aBCDE, aBCdeE D. ABcdE, ABcdE, aBCDE, aBCde

D. ABcdE, ABcdE, aBCDE, aBCde The diagram shows chrossing over of two chromatids. Use the diagram to answer the following question(s). 9. After crossing-over as shown, what would the sequence of genes be for each of the chromatids? A. ABcdE, ABcde, aBCDE, aBCDe B. ABEcd, ABcde, aBCDE, C. ABcdE, ABcde, aBCDE, aBCdeE D. ABcdE, ABcdE, aBCDE, aBCde

10. Write a one-page report explaining why meiosis is important in sexual reproduction.

10. Write a one-page report explaining why meiosis is important in sexual reproduction. Reports should include that meiosis increases genetic variation within a species, giving the population a better chance of surviving changing conditions.