Module 6 Meiosis
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| Which cells carryout out mitosis? | -Cells in most places in the body, as the organism grows and develops.
-Cells that need to replace other cells, such as blood cells that are replaced every few days.
-Cells that need to repair damage tissue, such as in the skin.
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| Which cells carryout Meiosis? | -Cells that will form gametes for sexual reproduction.
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| How does crossing over contribute to genetic variation? | -It produces chromosomes that have maternal and paternal segments.
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| How does orientation of the homologous pairs during metaphase 1 contribute to genetic variation. | -It randomly distributes paternal and maternal chromosomes into different cells.
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| Why are the cells haploid at the end of Meiosis 1? | -Because the homologous chromosomes separated in the Meiosis 1.
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| Select all the statements that describe events in meiosis that contribute to genetic diversity? | -Random orientation of the homologous chromosomes during metaphase 1
-Recombination of homologous chromosomes during prophase 1
-Random orientation of recombinant chromatids during metaphse 11
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| In which division do homologous chromosomes pair up and exchange sections of DNA? | -Meiosis 1
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| In which division homologous chromosomes are separated into different cells, resulting in haploid cells? | -Meiosis 1
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| In which division chromatids are separated into different cells? | -Meiosis 2 and Mitosis
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| Alleles are: | -one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome
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| Gene Locus | -a specific, fixed position on a chromosome where a particular gene or genetic marker is located.
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| If the Allele for brown hair is represented as "B" it would mean that | -Brown hair is a dominant trait
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| Assuming that brown hair is a dominant trait, which of the following genotypes would show brown hair as a phenotype? | BB and Bb
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| What is Mendel's advantage of studying pea plants? | -Can breed large numbers of organisms in a small space
-Can control who mates with who and do controlled crosses
-The traits are easy to to see and quantify
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| Why do we have two alleles for each gene? | -because we are diploid, we have homologous chromosomes that code for the same genes but may have different alleles
-Because we inherit one allele from mom and one from dad
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| Which of these statements are true about alleles? | -Alleles are located on the same area on the two homologous chromosomes
-Alleles code for the same gene but may have different traits.
-Alleles are sections of DNA that have different nucleotides sequences.
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| Which of the following statements are related to the Law of Segregation? | -During Meiosis, the resulting gametes are haploid(containing only one version of each chromosome)
-Parents only pass on one of their two(1 out of 2) alleles to their offspring
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| Which one of Mendels laws states that "the allele a gamete receives for one gene does not influence the allele received for another gene? | -law of independent assortment
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| When we split the alleles from each parent into the Punnet Square, which one of Mendel's laws are applying? | -Segregation
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| In a Dihybrid cross, when we assign equal possibilities to each of the different combinations of alleles a gamete could have, which one of Mendel's laws are we applying? | -Independent Assortment
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| In a dihybrid cross, when we place every allele combination into each box of the Punnet square, which one of the Mendel's laws are we applying? | Both
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| Which events in meiosis are responsible for the principle of segregation? | -Separation of homologous chromosomes in anaphase 1
-Seperation of chromatids in anaphase 2
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| Which events in meiosis are responsible for the principle of independent assortment? | -Crossing over in prophase 1
-Random orientation of homologous chromosomes in metaphase 1
-Random orientation of recombinant chromatids in metaphase 2
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| What is the genptype of individual 111-4 (see ipad pictures) | Ff
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