Which processes contribute directly to genetic variaion?
? What is meant by ploidy? Diploid? Haploid?
? Know the phases of meiosis?
? Know the differences between meiosis and mitosis.
? What is the major difference between metaphase of mitosis and metaphase I of meiosis?
? What is the major difference between meiosis II & mitosis?
? What is crossing over? ? What is synapsis?
? What are chiasmata?
? What are autosomes?
? What are sex chromosomes? What are the sex chromosomes in human male? Human female?
? What are homologous chromosomes?
? What is genetic recombination?
? What is fertilization? What are gametes?
? What are histones? What is chromatin?
? How many autosomes do humans have? Have many pairs of autosomes? How many pairs of sex chromosomes? What is the total number of chromosomes that human have? ? What are the sites of crossing over called?
? What is a karyotype?
? What is Down syndrome?
? What is polyploidy?
? What is nondisjunction?
? What is trisomy and monosomy
Which processes contribute directly to genetic variaion?
? What is meant by ploidy? Diploid? Haploid?
? Know the phases of meiosis?
? Know the differences between meiosis and mitosis.
? What is the major difference between metaphase of mitosis and metaphase I of meiosis?
? What is the major difference between meiosis II & mitosis?
? What is crossing over? ? What is synapsis?
? What are chiasmata?
? What are autosomes?
? What are sex chromosomes? What are the sex chromosomes in human male? Human female?
? What are homologous chromosomes?
? What is genetic recombination?
? What is fertilization? What are gametes?
? What are histones? What is chromatin?
? How many autosomes do humans have? Have many pairs of autosomes? How many pairs of sex chromosomes? What is the total number of chromosomes that human have? ? What are the sites of crossing over called?
? What is a karyotype?
? What is Down syndrome?
? What is polyploidy?
? What is nondisjunction?
? What is trisomy and monosomy
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Title: Meiosis Lab
Part 1: Modeling Meiosis Without Crossing Over (reformat as needed)
Take photos of the following stages of your meiosis bead simulation. Insert and label the following images:
Meiosis 1: Prophase I and Metaphase I
Meiosis 2: Metaphase II and Telophase II
Part 2: Modeling Meiosis With Crossing Over (reformat as needed)
Take photos of the following stages of your meiosis bead simulation. Insert and label the following images:
Meiosis with Crossing Over: Metaphase I and Telophase II
Questions â use the lab Introduction, your textbook and other sources to answer the following.
What is the state of DNA at the end of meiosis I? Are the chromosomes replicated or unreplicated? Diploid or haploid?
Why are chromosomes important?
How are Meiosis I and Meiosis II different?
Name two ways meiosis contribute to genetic recombination or genetic variety.
Why do you use non-sister chromatids to demonstrate crossing over? What would happen if you crossed over sister chromatids?
How many chromosomes were present in your simulation when meiosis I started?
Why is it necessary to reduce the chromosome number in gametes, but not in other cells of an organism?
If humans have 46 chromosomes in each of their body cells, determine how many chromosomes you would expect to find in the following:
Sperm | Egg | Daughter cell after mitosis | Daughter cell after meiosis |
Investigate a disease that is caused by a chromosomal mutation due to nondisjunction. When does the mutation occur? What chromosome is affected? What are the consequences?