General Biology Chapter 13- LHWright Study Guide PDF

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Chapter 13 Study Guide (Key terms and Concepts) Heredity

How are these words related to each other?

Variation Genetics Genes

What are they? Chromosomes? Locus?

Human gamete cells

# of chromosomes

sex chromosomes (haploid) How do they replicate and divide? Female (XX) versus male (XY) -autosomes Human somatic cells (diploid)

Examples? # of chromosomes How do they replicate and divide? Examples?

Can you explain these three types of sexual life cycles that occur in animals, plants/some algae or fungi or protist (Figure 13.6)? What makes them similar? What makes them different?

Concept 13.3: Meiosis reduces the number of chromosome sets from diploid to haploid -Can you list the steps of Meiosis I? -Can you state what is happening to both the cell and the chromosomes during each phase of meiosis I

Can you list the steps of Meiosis II?

-Can you state what is happening to both the cell and the chromosomes during each phase of meiosis II

Concept 13.4: Genetic variation produced in sexual life cycles contributes to evolution: (mutations throughout evolution are a must… why!), Three mechanisms contribute to genetic variation. Independent Crossing Over Random Fertilization Assortment

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