Inheritance - Alleles Flashcards
where does one chromosome in the pair come from?
your father and the other from the mother
what is ear wax controlled by?
a single gene
what are most characteristics controlled by?
many genes acting together eg height
what are alleles?
versions of a gene
what does the genotype of a person tell us?
the alleles present
what is homozygous?
two copies of the same allele
what does the phenotype of a person tell us?
the characteristics caused by the person’s alleles
what is heterozygous?
two different alleles
what is the dominant gene?
the one in a capital letter
what does a dominant allele show?
the phenotype even if there is only one copy present
what represents a recessive allele?
a small letter
when will a recessive allele show in the phenotype?
if two copies are present (no dominant allele present)
