Nonmendelian Genetics

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What is co-dominance in genetics?

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Co-dominance is a type of inheritance pattern where both traits from the parents are fully expressed in the offspring. For example, in a flower with red and white alleles, the offspring may have both red and white petals.

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What does homozygous dominant mean?

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Homozygous dominant refers to an organism that has two identical dominant alleles for a trait, represented as 'AA'.

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What are the types of chromosomal mutations?

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The main types of chromosomal mutations include deletion, duplication, inversion, and translocation. Frameshift is not a chromosomal mutation; it refers to a type of gene mutation.

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How do you determine the genotype of a missing parent in a Punnett square?

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To determine the genotype of a missing parent in a Punnett square, analyze the offspring's genotypes and the known parent's genotype to deduce the possible alleles.

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How are dominant alleles represented?

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Dominant alleles are represented by a capital letter.

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What is incomplete dominance?

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Incomplete dominance is a genetic situation in which one allele does not completely dominate another allele, resulting in a phenotype that is a blend of the two.

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What is a Punnett square used for?

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A Punnett square is a diagram used to predict the genotypes of offspring from a cross between two parents.

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What is the difference between genotype and phenotype?

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Genotype refers to the genetic makeup of an organism (e.g., AA, Aa, aa), while phenotype refers to the observable traits or characteristics (e.g., flower color, height).

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What is a recessive allele?

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A recessive allele is an allele that only expresses its trait when two copies are present (homozygous). It is represented by a lowercase letter.

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What is a chromosomal deletion?

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A chromosomal deletion is a mutation where a part of the chromosome is missing or deleted, which can lead to genetic disorders.