What is an allele in genetics?
A version of a gene at a specific chromosome position.
How many alleles does an individual inherit for each gene?
Two alleles, one from each parent.
What do alleles determine in eye colour inheritance?
Which eye-colour trait an individual obtains.
When is an individual homozygous for a trait?
When the two alleles are the same.
When is an individual heterozygous for a trait?
When the two alleles are different.
What do homozygous and heterozygous describe about alleles?
Whether the two alleles for a trait are the same or different.
What is a dominant trait in genetics?
A trait visible with only one copy of an allele.
What defines a recessive trait?
A trait dominated by a dominant trait.
How are dominant traits represented in genetics?
By capital letters.
How are recessive traits represented in genetics?
By lowercase letters.
What is a genotype in genetics?
A combination of allelic symbols representing alleles for a trait.
What does phenotype refer to?
The physical expression of a trait or characteristic.
What does a Punnett square show about offspring genes?
All gene combinations offspring could inherit and their likelihood.
What is the first step in using a Punnett square?
Combine alleles inherited from both parents.
What does combining parental alleles determine in a Punnett square?
Possible gene combinations and their likelihood in offspring.
What genetic possibility does the course ask students to calculate?
The chance of a child having red hair from specific parental traits.
Test your knowledge with 10 questions on Alleles and Inherited Traits.
1. What is an allele?
2. How many alleles for a gene does an individual typically inherit, and how are they obtained?
Review the complete course in the revision sheet for Alleles and Inherited Traits.
See revision sheet →Import your course and AI generates flashcards in 30 seconds.
Flashcard generator