Chapter 11 Deck 3 (slides 12- 21) Flashcards
Mendel suggested that the alleles for tallness and shortness in the F1 plants segregated (separated) from each other during the formation of _____
GAMETES
sex cells sperm and egg
SEGREGATION is the separation of _____pairs in the formation of _____
GENE pairs
formation of GAMETES
Law of Segregation: the _____ of gene pairs in gamete formation and the _____ of gene pairs during fertilization explain Mendel’s 3:1 tall to short ratio in his F2 plants
SEGREGATION of gene pairs
RECOMBINATION of gene pairs
Genetics involves ______(the likelihood that a
particular event will occur)
Probability
Example of Probability: An offspring of a father who is Tt has a _____% chance to receive the T sperm and a ____% chance to receive the t sperm
50%
50%
the way the alleles segregate in the father is completely ______
random
To calculate probabilities in genetics, it is helpful to use a “probability chart” or a _____ _______
PUNNETT SQUARE
“____types” (what look like)
Tall 75%/ Short 25% is a ____ phenotypic ratio
PHENOTYPES
3:1
“____types”(what genes are)
TT Homozygous Tall 25% / Tt Heterozygous Tall 50% /
tt Homozygous Short 25% is a ______ genotypic ratio
GENOTYPES
1:2:1
______: both alleles the same (purebred)
HOMOZYGOUS
_____: alleles different (hybrid)
HETEROZYGOUS
THE LAW OF ______– predicts the outcomes most accurately for large numbers of events
PROBABILITY
MENDEL’S ____ _____ CROSS EXPERIMENT:
In his experiment he followed 2 different genes as they passed from one generation to the next
TWO FACTOR
In Mendel’s experiment the F1 plants were ______s
hybrids
If gene pairs do not segregate independently of each other, then Each parent would only produce ___ types of gametes
2