Lecture 3 Flashcards
What factors played a significant role in Mendel’s success in developing the basic principles of inheritence?
proper experimental model, his approach and anaylzed results, studied easily differentialed characteristics
Whay is psium
…
Medal worked with
peas… he looked at specific characters that could be easily differentiated.
homozygote
an individual organism possessing tow of the same alleles at a locus
heterozygote
an individual organism possessing tow different alleles ata locus
phenotype or triat
the apperance or manifestation of the characteristic
character
an attribute or feature
Genes exist in different veriosns called
alleles
each allele encodes different
characteristics
Different alleles for a particular gene…
occupy the same locus on homologus chromosmes
monohybride cross
a cross btw two parents that differ in a single characteristic
each individual diploid organism possesses two alleles for any particular characteristic. These two alleles segregate when gametes are formed, and on allele goes into each gamete
Principle of segregation (mendel’s first law)
when two differetn alleles are present in a genotype, onyl the trait encoded by one of them, the dominant allele- is observed in the phenotype
the concept of dominance
segregation results from?
the separation of homologous chromosomes in meiosis
When does independent assortment occur?
anaphase I
