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Qualitative differences
Inheritance of qualitative differences
12
Biology
Undergraduate 1
12/17/2010

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Term
Qualitative difference
Definition
'big' differences; can be seen (tall, short, colour, etc.)
Term
Phenotype
Definition
characteristics we actually observe about the plant. Is it tall? Short? Green? Yellow? Starchy? Sweet?
Term
Genotype
Definition
the particular version of a gene controlling the particular trait in which we are interested
(Ss, SS, etc.)
Term
 alleles
Definition
alternative versions of the DNA sequences making up the gene
Term
locus
Definition
gene's location on a chromosome
Term
Environment
Definition
total influence of factors that might affect this trait, like rainfall, soil type and fertility
Term
Equation for influence of plant's appearance
Definition
Phenotype=genotype + environment
Term
____ has bigger influence on qualitative traits (phenotype)
Definition
genotype
Term
____ has bigger influence on quantitative traits
Definition
enviornment
Term
Steps that Mendel took:
Definition

1) pollinated by hand = (all smooth) [F1]

2) let F1 self-pollinate = (3:1 smooth to wrinkled) [F2]

 

Term
genotypic ratios
Definition

(eg):

1 SS: 2Ss: 1ss (Ss x Ss)

Term
Phenotypic Ratios
Definition

3 S- (smooth):1 ss (wrinkled)

(for Ss x Ss)

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