Week 15.1: Non-Mendelian Genetics Lab
Nicole Houchins
Created on November 25, 2024
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Non-Mendelian Genetics Lab
Welcome to Week 15!
- Exam 4 Corrections assignment will be posted this afternoon
- We don't have class on Thursday!
- Enjoy your mini holiday break :)
- Week 15 assignments are due on Sunday, 12/1 at 11:59pm
Reminders
- Law of dominance and uniformity
- Some alleles are dominant over other alleles and they will be the ones expressed in the phenotype
Mendel's Scientific Laws
- Law of dominance and uniformity
- Some alleles are dominant over other alleles and they will be the ones expressed in the phenotype
- Law of segregation
- Two alleles for each gene separate from each other during gametogenesis, so the parent passes down only one allele
Mendel's Scientific Laws
- Law of dominance and uniformity
- Some alleles are dominant over other alleles and they will be the ones expressed in the phenotype
- Law of segregation
- Two alleles for each gene separate from each other during gametogenesis, so the parent passes down only one allele
- Law of independent assortment
- Alleles of different genes segregate independently of one another during meiosis and are distributed independently of one another in the next generation
Mendel's Scientific Laws
- Some genes don't follow Mendel's scientific laws:
- Codominance
- Incomplete dominance
- Linked genes
- Multiple alleles for one gene
- Polygenic trait
- Pleiotropy
- Epistasis
- Sex-linked genes
- Extranuclear inheritance
Exceptions to Mendel's Scientific Laws
- Some genes don't follow Mendel's scientific laws:
- Codominance
- Incomplete dominance
- Linked genes
- Multiple alleles for one gene
- Polygenic trait
- Pleiotropy
- Epistasis
- Sex-linked genes
- Extranuclear inheritance
Exceptions to Mendel's Scientific Laws
Dominant allele doesn't fully prevent the expression of the recessive allele
Both alleles are equally expressed when present together
Codominance & Incomplete Dominance
- Gene expression varies depending on whether you're male or female since the gene is found on either the X or Y chromosome
Sex-Linked Genes
- Complete the lab manual practicing one-trait crosses that don't follow Mendel's scientific laws
Non-Mendelian Genetics Practice