Objectives

Chapter 29

1. State Mendel's Laws

2. Perform a monohybrid and dihybrid cross stating the phenotypic and genotypic ratios.

3. Predict the outcome of a test cross, sex linked cross, epistatsis, multiple alleles, codominance, and collaboration gene interactions.

4. Describe the determination of the offspring's sex.

5. Compare mitochondial inheritance to sexual reproduction.

6. Describe penetrance and expressivity in relation to Down's syndrome.

7. What is the significance of female mosaics?

8. Outline the early stages of human development from the ovum stage to the neurula.

9. Distinquish between the embryonic and fetal periods.

10.

gene

allele

phenotype

genotype

homozygous

heterozygous

autosome

recessive

dominance

incomplete dominance

polyhybrid

epistasis

complementary genes

multiple alleles

sex-linked

Marfan's disease

Klinefelter's disease

Turner's syndrome

Jacob's Karyotype

Down's syndrome

hermaphrodites

morula

blastula

neurula