Mendelian Genetics Flashcards
Why was the garden pea a good organism to experiment with?
Readily available
Short generation time
Large number of progeny
Usually breeds by self-pollination (true breeding)
Easy to manipulate (cross)
What did Mendel conclude from his experiments?
Alternative versions of a gene causes variation - alleles
An organism inherits two alleles, one from each parent
Alleles may be dominant or recessive
Alleles segregate during gamete production
What was Mendel’s first law?
The principle of segregation
What is a testcross?
Cross a heterozygote to an individal that is homozygous for the recessive allele
What was Mendel’s second law?
The principle of independent assortment
Alleles of different genes segregate independently of each other