Biology 100/101
Lecture 11
Heredity and Meiosis

Announcements &
Assignments

Lecture Objectives

Web Resources

Glossary of
Genetic Terms

More
on Alleles

Chromosomes as CDs

The Study of
Heredity

Mendel's Law
of Segregation
(single genes)

Mendel's Law of
Independent Assortment
(two genes)

Lecture Syllabus

IB 100/101 Home Page

Objectives:

The content of this lecture will help you complete these assignments:

Take-Home Assignment #4 - Meiosis and Genetics Due at Lecture Wednesday October 21.

Take-Home Assignment #5 - Human Genetics Due at Lecture Monday October 26.

Second Moodle Assignment, due in your TA's Moodle Forum by 8 AM Wednesday October 28.

After studying this material you should be able to:

1. Explain what chromosomes are, what their role is, and how organisms get them.

2. Explain which events in meiosis contribute to genetic variability, and how these events relate to "Mendel's laws" of segregation and independent assortment.

3. Understand the relationships among these genetic terms:

homologous chromosomes	sister chromatids	genes
dominant and recessive alleles	genotype	phenotype
homozygous (dominant and recessive)	heterozygous	autosome
single gene cross	two gene cross	pedigree

4. Describe the functionality of proteins produced by dominant allele and recessive alleles.

5. Given the phenotypes or genotypes of two mating individuals, predict the genotypes and phenotypes of offspring that they might produce.

6. Given the phenotypes or genotypes of the offspring of two parents, predict the genotypes and phenotypes of the parents giving rise to them.

7. Interpret the inheritance of cases of human genetic conditions that are autosomal dominant or autosomal recessive.