Genetics Flashcards
(28 cards)
Robert Bakewell
father of the art of animal breeding
credited for developing many livestock breeds
Bakewell’s success to 3 principles
- definite goals for breeding program
- leased males rather than selling
- mated the best of the best regardless of relationship
Gregor Mendel
father of modern genetics (pea plant experiment)
chromosomes
self replicating bodies in nucleus that carry genetic code
cat chromosome
19
pig chromo
19
human chromo
23
sheep chromo
27
cow chromo
30
goat chromo
30
horse chromo
32
dog chromo
39
chicken chromo
39
turkey chromo
41
gametes (sex cells)
formed by meiosis
ova
produced by ovaries
sperm
produced by testes
haploid
ova and sperm, combine to form diploid zygote
diploid
produced by mitosis
double chromosomes
one of each pair from parent
all body cells except gametes
haploid
produced by meiosis
gametogenesis
gametes
2 combine in process of fertilization
Reginald Punnett
punnett squares, journal of genetics
How many different genes do horses have for color?
11 (177,000 combos)
incomplete dominance
intermediate state between parents blending of parental phenotypes
epistasis
expression of one gene is modified by one or more genes at other locations (golden lab)
