An allele is a variant form of a gene that can result in different traits or characteristics. In Worksheet 17, you may encounter questions related to identifying alleles and their impact on genetic inheritance.
For example, if the gene for eye color has two alleles – one for blue eyes and one for brown eyes, an individual’s eye color will depend on which alleles they inherit from their parents.
Glossary Of Genetic Terms Worksheet 17
2. Dominant
A dominant allele is one that masks the effect of a recessive allele when both are present. In Worksheet 17, you may be asked to determine whether a trait is dominant or recessive based on the genetic information provided.
For instance, if the allele for curly hair is dominant over straight hair, an individual with one allele for curly hair and one for straight hair will have curly hair due to the dominance of the curly hair allele.
3. Punnett Square
A Punnett square is a diagram used to predict the possible outcomes of a genetic cross between two individuals. Worksheet 17 may include exercises where you have to fill in Punnett squares to determine the probabilities of different traits being passed on to offspring.
By using Punnett squares, you can visually represent how alleles from each parent combine to produce specific genotypes and phenotypes in the offspring.