KA4: Variation and Inheritance Flashcards
What contributes to variation within a species
Combining genes from two parents
What is discrete variation
Difference in characteristics controlled by one gene
What is continuous variation
Difference in characteristics controlled by more than one gene
What is polygenic
More than one gene
What is an allele
Different forms of a gene that produce different phenotypes
What is a genotype
Combination of alleles represented by letters
What is a phenotype
Physical appearance based on the genotype for a particular characteristic
What is dominant
Allele that always produces a certain phenotype represented by a capital letter
What is recessive
Allele not shown in the phenotype if a dominant allele of the same gene is represented by a lower case letter
What is heterozygous
If the two alleles of a particular gene are different
What is homozygous
If the two alleles of a particular gene are identical
What are monohybrid crosses used for
Find out what characteristics are predicted in offspring from one generation to the next
