1.4 Inheritance
No description yet. This curated deck is ready for daily study.
Card preview (16)
what are alleles
chromosomes representing the same trait from both parents
alleles can be…
dominant or recessive
dominant alleles are represented with what
a capital letter
recessive alleles are represented with what
a lower case letter
a genotype
describes which alleles have been inherited in an individual
a phenotype
is only what we can see. behind some phenotypes can be information for other alleles (recessive alleles)
when are dominant alleles expressed
always (if they are present)
when are recessive alleles expressed
if there is no dominant alleles
what is a genotype
the genetic make-up of an individual
what is a phenotype
the physical expression of the genotype within the environment
homozygous
two of the same genes eg BB or bb
heterozygous
different versions of the same gene eg Bb
heterozygous individuals are called
carriers
what are punnett squares used to predict
the possible outcomes of a genetic cross
what is co-dominance
when two alleles are express at the same time
what is an example of co-dominance
ABO blood. A and B are co-dominant, but both are dominant to O