Modern Biology 03-121

Spring 98

Exam 3 Study Guide

Chapter 9

chromosomes chromatin DNA genes karyotype diploid (2n) haploid (n) gametes somatic cell cell cycle generation time, T metaphase anaphase telophase homologous chromosomes meiosis I, II prophase I,II metaphase I, II anaphase I, II telophase I,II synapsis

zygote centromere kinetochore mitotic spindle centrioles sexual and asexual reproduction genetic recombination chiasmata interkinesis mitosis cytokinesis prophase interphase S Phase G1 phase G2 phase sister chromatids mitotic spindle synaptonemal complex crossing over

Major topics covered. know and understand in detail the major events occuring during each process. Be able to compare and contrast mitosis with meiosis. Pay attention to chromosome movement, sister chromatids vs homologous chromosomes, haploid vs diploid state)

Cell cycle

mitosis, cytokinesis, interphase (G1, S, G2, G0)

Mitosis

prophase, metaphase, anaphase, telophase

Meiosis

prophase I, metaphase I, anaphase I, telophase I

prophase II, metaphase II, anaphase II, telophase II

Chapter 10

true breeding phenotype P generation genotype F1 generation monohybrid cross F2 generation Punnett square dominant test cross recessive

dihybrid cross locus linkage allele dosage compensation homozygous incomplete dominance heterozygous polygenic inheritance Barr body pleitropy

Major topics covered. Know and understand in detail.

Mendel's principles

Principle of dominance

Principle of segregation (how does this relate to separation of homologous chromosomes during meiosis I)

Principle of independent assortment

When Mendel's principles must be modified.

linkage

crossing over

incomplete dominance

polygenic inheritance

pleitropy

Genetic problems

monohybrid cross

dihybrid cross

test crosses