INCOMPLETE DOMINANCE & CODOMINANCE Flashcards
is any pattern of inheritance in which traits do not segregate in accordance with Mendel’s laws.
NON-MENDELIAN INHERITANCE
It is a form of intermediate inheritance in which one allele does not completely dominate another allele, resulting in a NEW PHENOTYPE.
INCOMPLETE DOMINANCE
The term ”incomplete dominance” was proposed by the German botanist,
CARL CORRENS
Both alleles are EXPRESSED EQUALLY in the phenotype of the heterozygote
CODOMINANCE
is a protein- bound to a sugar molecule found on the surface of our red blood cells
ANTIGEN
What is the key difference between incomplete dominance and codominance?
a) Incomplete dominance results in blending of traits, while codominance exhibits equal expression.
b) Incomplete dominance results in equal expression, while codominance exhibits blending.
c) Both result in identical phenotypes.
d) Neither exhibits a phenotypic difference.
a) Incomplete dominance results in blending of traits, while codominance exhibits equal expression.
If you cross a red-flowered plant (RR) with a white-flowered plant (WW), and the offspring have pink flowers (RW), what type of inheritance is this?
INCOMPLETE DOMINANCE
In a breed of chickens, feather color is determined by two alleles, black (B) and white (W). If a black chicken (BB) is crossed with a white chicken (WW), what will be the phenotype of the offspring?
a) All black feathers
b) All white feathers
c) Gray feathers
d) Half black and half white feathers
c) Gray feathers
In the ABO blood group system, individuals with genotype IAIA have type A blood, those with genotype IBIB have type B blood, and those with genotype IAIB have type AB blood. What type of inheritance pattern is exhibited by the ABO blood groups?
a) Incomplete dominance
b) Codominance
c) Simple Mendelian dominance
d) Recessive inheritance
b) Codominance
- In a population of flowers, individuals with genotype RR have red petals, those with genotype WW have white petals, and those with genotype RW have pink petals. What type of inheritance pattern is exhibited in this population?
a) Incomplete dominance
b) Codominance
c) Simple Mendelian
dominance
d) Recessive inheritance
a) Incomplete dominance