chapter 10: mendelian genetics Flashcards
what does homozygous mean?
when the alleles of a gene are identical (ex. PP)
what does heterozygous mean?
when the alleles of a gene of different (ex. Pp)
what’s a phenotype?
an organisms physical appearance
what’s a genotype?
an organisms genetic makeup
who developed the rules of inheritance?
gregor mendel
what trait shows up in the F1 generation?
the dominant gene
what’s an allele?
different versions of the same gene
what do monohybrid crosses demonstrate?
Mendel’s law of segregation (first law)
what do dihybrid crosses demonstrate?
Mendel’s law of independent assortment (second law)
what is incomplete dominance?
when the phenotypes of different alleles are blended together to form an “intermediate phenotype”, neither allele is dominant (ex. red and white flowers = pink flowers)
what are unlinked genes?
genes that are found on different chromosomes
what is independent assortment?
independent segregation of genes during the formation of gametes
