Traits And Inheritance Flashcards
What are genes?
The set of instructions for an inherited trait
What is an allele?
One of the alternative forms of a gene that governs a characteristic, such as hair color
What is a dominant allele?
A dominant allele will influence how a trait will look, even if there is only one dominant allele. They are represented by capital letters
What is a recessive allele?
A recessive allele will only influence how a trait will look if both alleles are recessive. If only one allele is recessive it’s trait can disappear.they are represented by lower case letters
What is a phenotype?
An organism appearance or other detectable characteristics.
Think phenotype-photograph
What is a genotype?
A entire genetic makeup of an organism; also the combination of genes for one or more specific traits (think:genotype- genes within)
What does homozygous mean?
It means that both alleles are dominant or both are recessive.
Ex:BB or bb
What does heterozygous mean?
It means that one allele is dominant and one is recessive.Ex-Bb
A heterozygous genotype will display the dominant phenotype.