A multiple allele trait is one of at least three different types of a specific gene, but only two of these types are able to exist in a diploid. A diploid is a type of organism or cell that has two sets of chromosomes, with one set typically from the father and the other from the mother.Continue Reading
An allele is a gene alternative on a specific chromosome and in a specific location. In humans, who are diploids, offspring inherit an allele from their mom and another allele from their dad. The organism's phenotype depends on both of these alleles. Phenotype determines what an organism, such as a human, looks like and includes things like hair color, skin color, eye color and other physical characteristics.
Alleles are either recessive or dominant. Dominant alleles are essentially more forceful and produce the same physical characteristic whether its partner allele is different or identical. A recessive allele needs its partner allele to be identical or else the phenotype is not apparent. To put it simply, a dominant allele is very independent and can do the job of producing a phenotype on its own, but a recessive allele needs some help and requires an identical partner to get the job done and produce a phenotype.Learn more about Molecular Biology & DNA
A homologous trait shared between two species is actually the same thing as synapomorphy, but synapomorphy is the term favored in modern biology. Both terms refer to similarities between different species that derive from a common ancestry. Similarities between species that are not from shared ancestry are called convergent traits.Full Answer >
Rh factor is an inherited trait that does not affect health but sometimes affects pregnancies of Rh-negative mothers carrying Rh-positive babies, states Mayo Clinic. Rh factor is a protein located on the red blood cells. Individuals with the protein are Rh positive; those without it are Rh negative.Full Answer >
A homozygote is an individual organism with two copies of the same allele that determines a specific trait, while a heterozygote has a copy of two different alleles for the same trait. Alleles are alternative forms of genes that determine the same trait.Full Answer >
Brown eyes are generally dominant over blue eyes, but since a blue-eyed child can have brown-eyed parents, blue eyes are not a strictly recessive trait. Eye color inheritance is more complicated than simple dominant and recessive traits, according to The Tech Museum of Innovation.Full Answer >