Download
1 / 24
250 likes | 392 Views
Meiosis & Mendelian Genetics. NBO 4&5. Mitosis Review. Big Ideas!!! Chromosome condense and form SISTER CHROMATIDS. Sis Chromatids pulled apart. Each daughter cell now has HOMOLOGOUS PAIRS. Homologues vs Sis Chromatids. Five Funners Slow Version. Five Funners BIG Version.
E N D
Meiosis & Mendelian Genetics NBO 4&5
Mitosis Review • Big Ideas!!! • Chromosome condense and form SISTER CHROMATIDS. • Sis Chromatids pulled apart. • Each daughter cell now has HOMOLOGOUS PAIRS.
Meiosis – makes ME 1. Meiosis makes cells that are different from parent. 2. Daughter cells contain HALF the genetic info. 3. 4 daughter cells created. NOT equal
Animal Game: Platypus 2n=56 2n = _______ n = ______
Crossing Over Genetic Variation, Genetic Variation
Mitosis Meiosis • Asexual • Chromosome Number the same • Used to build and repair damaged cells in a Eukaryote • Produce Gametes BUT is not sexually reproduction • Every cell produced is different • Genetic Variation
Karyotyping Looks at the chromosomes to see if they are paired correctly
Turner syndrome results from a single X chromosome (45, X or 45, X0). • Klinefelter syndrome, the most common male chromosomal disease, otherwise known as 47, XXY is caused by an extra X chromosome. • Edwards syndrome is caused by trisomy (three copies) of chromosome 18. • Down syndrome, a common chromosomal disease, is caused by trisomy of chromosome 21. • Patau syndrome is caused by trisomy of chromosome 13. • Cri du chat (cry of the cat), from a truncated short arm on chromosome 5. The name comes from the babies' distinctive cry, caused by abnormal formation of the larynx. • 1p36 Deletion syndrome, from the loss of part of the short arm of chromosome 1. • Angelman syndrome – 50% of cases have a segment of the long arm of chromosome 15 missing.
Alleles The building block of all genetics. Same gene just different variations.
Why we need both set of words Homozygous and Heterozygous tell us what type of relationship the alleles have. Dominant and Recessive tell us about the type of protein the allele codes for.
