Concepts of Inheritance (Grade 12 NSC Matric Life Sciences): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is a locus in genetics?
What is a locus in genetics?
The exact position of a gene on a chromosome
Which term describes an organism's observable physical characteristics?
Which term describes an organism's observable physical characteristics?
Phenotype
An organism with two identical alleles (TT or tt) is described as what?
An organism with two identical alleles (TT or tt) is described as what?
Homozygous
What colour results from crossing red (RR) and white (WW) flowers showing incomplete dominance?
What colour results from crossing red (RR) and white (WW) flowers showing incomplete dominance?
Pink
In co-dominance, how are both alleles expressed in the phenotype?
In co-dominance, how are both alleles expressed in the phenotype?
Both are fully expressed simultaneously
Why are males more affected by X-linked recessive traits?
Why are males more affected by X-linked recessive traits?
They have only one X chromosome (XY)
How many alleles exist in the ABO blood system in the population?
How many alleles exist in the ABO blood system in the population?
Three alleles
What does a monohybrid cross track?
What does a monohybrid cross track?
Inheritance of a single characteristic
What are homologous chromosomes?
What are homologous chromosomes?
Matching pairs, one from each parent
How are recessive alleles typically represented?
How are recessive alleles typically represented?
By lowercase letters