Meiosis and inheritance

Question 1

whta are the principles of mendelian inheritance?

Answer 1

> uniformity
- characteristics are retained through generations
- can skip a generation and reappear in subsequent generations
segregation
- only 1 allele at a time
independent assortment
- separation of alleles (doesn’t always happen)

Question 2

how is genetic diversity achieved?

Answer 2

> homologous recombination

• gametes exchange alleles from the maternal and paternal chromatid of the same chromosome.
• therefore each gamete receives a mis of DNA from both parents

Question 3

what is a proband?

Answer 3

the individual first diagnosed with a genetic condition, the top of a pedigree chart