Reproduction & genetics

Donald Winslow16 September 2010

Readings from Hoefnagels 2009. Biology, McGraw-Hill, New York.

Ch. 8 pp 154-163 (cell cycle & mitosis)Ch. 9 pp 174-182 (meiosis & sex)Ch. 10 pp 196-203 (Mendelian genetics)

Reproduction

Cellular reproduction Somatic

Genome, genes in DNA in nucleus Cell cycle

G1, S, G

2, Mitosis

Gametic Meiosis

Organismal reproduction

The cell cycle

G1

S

G2

M

Organismal reproduction

Types of reproduction Asexual Sexual

Life cycles Genetics Costs of sexual reproduction Advantages of sexual recombination

Types of reproduction Asexual

cloning binary fission

budding

Ameiotic & meiotic parthenogenesis

sexual

dioecy (separate sexes)

monoecy (hermaphroditism)

Figure 7.1

From Hickman et al. 2006 (13th ed.)

Generalized sexual lifecyclefemale male

Ovum sperm(gametes, 1N)

meiosis

2N

fertilization

zygote (2N)

embryo

development

Genetics

Gregor Mendel Alleles, genes, and genomes Genotype & phenotype Dominance relations among alleles Monohybrid & dihybrid crosses Segregation & independent assortment Human blood groups