Psycho 104 - Ch. 4 Flashcards
What are the 4 encoded compibations of Bases for Heredity
Adenine (A)
Tymine (T)
Guanine (G)
Cytosine (C)
Genes contain bases, carry codes for protein manufacture
How do genes influence our development and function?
Through coding for the production of proteins
Define Dominant, recessive, and polygenic
- If a gene in a pair is DOMINANT, the characteristic it controls will be displayed
- If RECCESSIVE, it will not show up UNLESS the partner gene is also recessive
- When a number of gene pairs combine to create a single penotypic trait. Known as the POLYGENIC TRANSMISSION
Human Genome Project
Thought we had 100,000 genes
Turns out its only 25,000
200 genes may be from bacteria installed into early ancestors
What are the two kinds of Genetic Engineering?
Recombinant DNA Procedures
-Gene splicing procedures that can produce new life forms. Such as bacteria that can produce scarce chemical materials such as HUMAN GROWTH HORMONE
Gene Knockout
- Particular funtion of gene elimination
- Problem is v little behaviour is controlled by a single gene
- Also multiple system can be affected by a single gene
Behaviour Genetics
study of how genetics and enviroment components lead to changes in behaviour
Define Heredity
Passage of characteristics from parents to offspring by way of genes
Define Heritablility
How much of the variation in a characteristic within a population can be attributed to genetic difference
Heretability Coeffecient
Estimate of how much of characteristic is due to genetic factors
Define Concordance Rate
Rate of co-occurance of a trait (Characteristic) among individuals
Higher rates omongs ind. who are more related to eachother
Studied using adoption and twin studies
Difference between Identical and Fraternal Twins
Identical ( in 250)
One egg, one sperm, egg splits into two zygotes. THIS IS LESS COMMON
Fraternal
Two eggs, two sperm, two zygotes. THIS IS MORE COMMON
