Germ plasm theory
Inheritance only takes place via gametes
Which scientist proved the germ plasm theory
Weisman - mice cut off tail
Which hypothesis of inheritance did the germ plasm theory contradict?
Lamarck
What are karyotypes
Individual’s list of chromosomes
What are non-sex chromosomes called
Autosomes
Number of chromosome pairs in humans
23
Number of chromosome pairs in chimpanzees
24
Number of chromosome pairs in drosophila
4
Homozygote vs Heterozygote
Homozygote has same allele in each homologous chromosome
Heterozygote has different allele in each homologous chromosome
Three processes that can change the genetic information in the gametes
- Mutation
- Independent assortment
- metaphase 1 of meiosis - Recombination of parental chromosomes
- late prophase 1 of meiosis
When does chromosome replication occur
During interphase
What happens during late prophase 1
Recombination
Why did meiosis evolve?
Elimination of harmful mutations via recombination and independent assortment
Better adaptability to changing environmental conditions via genetic variability among offspring
