Inheritance 2 Flashcards
What is a genotype?
The genetic makeup of an organism in terms of the alleles present
The phenotype is…
The observable features of an organism
Homozygous is…
Having two identical alleles of a particular gene.
Two homozygous individuals are…
Pure breeding
Heterozygous describes…
Having two different alleles of a particular gene
What is a domiant allele?
An allele that is expressed if it is present
What is a recessive allele?
An allele that is expressed only if the dominant allele of that gene is not present
How do you find out if an organism is pure bred?
Breed the unknown organism with homozygous recessive alleles for that particular gene or trait.
The 23rd chromosome pair…
Gives the inheritance of sex in humans
What are sex-linked genes?
Genes found on the non-homologous part of the X or Y chromosome
What is codominance?
When neither allele is completely recessive or dominant. Both alleles have an effect on the phenotype.
