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Monohybrid inheritance
Explain inheritance as the passing of genetic information from one generation to the next.
18
Objectives
180
Flashcards
126
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90 min
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CambridgeIGCSEBiologyInheritance
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Monohybrid inheritance outcomes18 objectives
- Explain inheritance as the passing of genetic information from one generation to the next.
- Define genotype as the genetic composition of an organism, specifically regarding the alleles it possesses.
- Define phenotype as the visible traits or characteristics of an organism.
- Define homozygous as having two identical alleles for a specific gene.
- Indicate that two homozygous individuals that mate will produce offspring that are pure-breeding.
- Define heterozygous as having two different alleles for a specific gene.
- Indicate that a heterozygous individual cannot be pure-breeding.
- Define a dominant allele as one that is expressed in the phenotype if present in the genotype.
- Define a recessive allele as one that is expressed in the phenotype only when no dominant allele is present in the genotype.
- Analyze pedigree charts to understand the inheritance of a specific trait.
- Utilize genetic diagrams to forecast the outcomes of monohybrid crosses and compute phenotypic ratios, specifically 1:1 and 3:1 ratios.
- Employ Punnett squares in genetic crosses that yield multiple genotypes to determine and illustrate the potential genotypes.
- Clarify how to perform a test cross to determine an unknown genotype.
- Define codominance as a condition where both alleles in heterozygous individuals influence the phenotype.
- Explain the inheritance patterns of ABO blood groups, identifying the phenotypes A, B, AB, and O, and the corresponding alleles I^A, I^B, and i.
- Define a sex-linked trait as one where the gene is located on a sex chromosome, making it more prevalent in one sex compared to the other.
- Describe red-green color blindness as an example of a sex-linked trait.
- Utilize genetic diagrams to predict the outcomes of monohybrid crosses that involve codominance.
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