Download 4.2 Probability and Heredity

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Pharmacogenomics wikipedia, lookup

Genome (book) wikipedia, lookup

Microevolution wikipedia, lookup

Dominance (genetics) wikipedia, lookup

Quantitative trait locus wikipedia, lookup

Public health genomics wikipedia, lookup

Population genetics wikipedia, lookup

Medical genetics wikipedia, lookup

Genetic engineering wikipedia, lookup

Human genetic variation wikipedia, lookup

Behavioural genetics wikipedia, lookup

Heritability of IQ wikipedia, lookup

Genetic testing wikipedia, lookup

Hardy–Weinberg principle wikipedia, lookup

Inbreeding wikipedia, lookup

Genetic drift wikipedia, lookup

Polymorphism (biology) wikipedia, lookup

Twin study wikipedia, lookup

Transcript
4.2 Probability and Heredity
The principles of probability predict the results of a particular event.
Probability is a number that describes how likely it is that an event will occur.
The Laws of Probability predict what is likely to occur, not necessarily what
will occur.
Independence of events – each event occurs independently of others.
Probability and Genetics
Mendel was the first scientist to recognize that the principles of probability can be
used to predict the results of genetic crosses.
Punnett Squares
o Tools used to help understand how the laws of probability apply to
genetics
o Chart that shows all of the possible combinations of alleles that can
result from a genetic cross
o Determines probability of a particular outcome
o In a genetic cross, the allele that each parent will pass on to is offspring
is based on probability
Phenotype:
physical appearance or visible traits
Genotype:
genetic make-up or allele combination
Homozygous:
2 identical alleles
Heterozygous: 2 different alleles (hybrid)
Codominance: alleles are neither dominant nor recessive and both are
expressed.