week 4 - altruism and the coefficient of relatedness Flashcards
homologous
same genes in the same ordr
-each chromosome of a homologous pair contain the same loci
loci
positions or sections of DNA located along a chromosome that code for the same genes but the exact information encoded by the gene can be different
how is the sex of a baby determined by the father?
sperm carries 50 percent x or y and it is random chance that the gamete will give x or y chromosome
-makes xx to be female and xy to be male
how are men more affected by sex linked traits?
men only have one chance to get an unaffected x chromosome, and women have two chances
example of an autosomal recessive trait
albinism
example of an autosomal dominant trait
huntingtons disease
what is the basic term for meiosis?
gamete production
how does meiosis work?
main job gamete formation, so it reduces cell from diploid to haploid
-before mitosis
ploidy
the number of chromosomes that are present
what is the basic term for mitosis?
somatic cell production (everything else is going through this)
how does mitosis work?
main job is to produce daughter cells with the exact genetic component of the parent cell
-cell cycle has to happen for mitosis to happen
mendels rule of independent assortment
alleles of one gene can segregate (during meiosis) independently of other genes
-the allele that you pass on for one trait (eye color) does not have any affect on the allele you pass on for another trait
-hence the dihybrid cross
what does it mean if a standard deviation is large or small?
if its large it means that the data is spread out and not reliable
- if its small it means its most likely accurate
strength of meta study
lots of variation and we can have a large and diverse sample size for a large period of time
direct fitness
increasing the number of offspring that an individual produces