Bio 351 Exam 1| QUESTIONS WITH CORRECT ANSWERS| LATEST UPDATE
GUARANTEED SUCCESS
Metaphase 1 (meiosis) Chromosomes line up at the equator.
Anaphase 1 (meiosis) homologous chromosomes separate the opposite poles
Prophase 2 (meiosis) chromosomes stay condensed
Metaphase 2 (meiosis) Chromosomes line up at the equator.
Anaphase 2 (meiosis) sister chromatids separate
Importance of Meiosis allows variation (evolution)
maintains chromosome number in diploid sexually reproducing organisms
Aneuploidy change in number of single chromosomes
Occurs through non-disjunction
ex. trisomy and monosomy
Non-disjunction inappropriate cell division
, Alterations in ploidy levels changes in complete set of chromosomes
ex. triploidy
Genotype genetic makeup of an organism
Phenotype physical characteristics of an organism
Gregor Mendel father of genetics, pea plants
Why peas work 1) several varying traits
2) traits with 2 distinct variants
3) can control matings
4) started with true/pure breeding
5) close correlation between genotype and phenotype
Pea experiment conclusions alternate versions of genes account for variation in inherited
characteristics
Allele alternate versions of the same gene
GUARANTEED SUCCESS
Metaphase 1 (meiosis) Chromosomes line up at the equator.
Anaphase 1 (meiosis) homologous chromosomes separate the opposite poles
Prophase 2 (meiosis) chromosomes stay condensed
Metaphase 2 (meiosis) Chromosomes line up at the equator.
Anaphase 2 (meiosis) sister chromatids separate
Importance of Meiosis allows variation (evolution)
maintains chromosome number in diploid sexually reproducing organisms
Aneuploidy change in number of single chromosomes
Occurs through non-disjunction
ex. trisomy and monosomy
Non-disjunction inappropriate cell division
, Alterations in ploidy levels changes in complete set of chromosomes
ex. triploidy
Genotype genetic makeup of an organism
Phenotype physical characteristics of an organism
Gregor Mendel father of genetics, pea plants
Why peas work 1) several varying traits
2) traits with 2 distinct variants
3) can control matings
4) started with true/pure breeding
5) close correlation between genotype and phenotype
Pea experiment conclusions alternate versions of genes account for variation in inherited
characteristics
Allele alternate versions of the same gene
