Genotypes and Phenotypes (VCE SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a genotype?
What is a genotype?
Genetic composition at a gene locus
An individual with alleles TT is described as what?
An individual with alleles TT is described as what?
Homozygous dominant
How many copies of a recessive allele are needed for it to be expressed in the phenotype?
How many copies of a recessive allele are needed for it to be expressed in the phenotype?
Two copies
What is a carrier?
What is a carrier?
Has recessive allele but doesn't show it
In codominance, what happens to both alleles in a heterozygous individual?
In codominance, what happens to both alleles in a heterozygous individual?
Both are fully expressed together
What is the genotype for blood type AB?
What is the genotype for blood type AB?
What phenotype results from genotype in snapdragons?
What phenotype results from genotype in snapdragons?
Pink flowers
Why do males express X-linked recessive traits more frequently than females?
Why do males express X-linked recessive traits more frequently than females?
Males have only one X chromosome
What percentage of males of European descent have colour blindness?
What percentage of males of European descent have colour blindness?
Approximately 8%
What advantage do heterozygous sickle cell carriers have?
What advantage do heterozygous sickle cell carriers have?
Increased malaria resistance