Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
20 Cards in this Set
- Front
- Back
|
p?
|
frequency of most abundant alletle in the population
|
|
|
q?
|
Less abundant allelic frequency
|
|
|
p^2?
|
frequency of normal individuals. Usually homzygous dominant.
|
|
|
2pq?
|
Heterozygous frequency
Physicans refer to this as carrier frequency. |
|
|
q^2?
|
Affected frequency, usually homozygous recessive. Physicans refer to this as incidence.
|
|
|
Allelic frequencies?
|
p and q.
|
|
|
Genotypic frequencies?
|
p^2, 2pq. q^2
|
|
|
Map unit equation?
|
100x[(sum of recombinants)/(Sum of all)]
|
|
|
Independent assortment?
|
Inheritance of alleles at one locus does not influence inheritance at another loci
|
|
|
Semi dominance?
|
(parital or incomplete dominance) Heterozygous are intermediates
|
|
|
Codominace?
|
Different alleles impart independent effects on phenotype. Blood type is a archtypical example.
|
|
|
Polygenic inheritance?
|
To have multiple genes influencing the same trait. Most traits are polygenic.
|
|
|
Epistatis?
|
For a gene to mask the phenotype of another gene at another locus.
The gene that masks is the suppressor or epistatic The suppressed gene is hypostatic. |
|
|
Hemizygotes?
|
Males only have half as many X linked alleles.
Y only carries a few but one of the is SRY and this causes embryo to develop into a male |
|
|
Sex influenced inheritance?
|
Autosomal genes that are expressed differently in males and females. Generally they are secondary sexual characteristics.
|
|
|
Characteristcs of X Linkage?
|
Affected grandfather, carrier mother, affected grandson
|
|
|
Barr Bodies?
|
Inactivated X chromosomes that become heterochromatic.
|
|
|
Primary assumption of Hardy Weinberg?
|
That the population is at equilibrium. Meaning the population is not undergoing evolution.
|
|
|
Mutation as a secondary assumption?
|
Represent a minute change in allelic frequency. A mutation can only add onle allele to the population.
|
|
|
Genetic drift as a secondary assumption?
|
The random assortment of various genotypes and phenotypes that very from generation to generation.
More pronounced in small populations |
