Pedigree

What does 'AA' represent in genetics?

• A homozygous dominant genotype, where both alleles are dominant.

• A heterozygous genotype, where one allele is dominant and one is recessive.

• A recessive genotype, where both alleles are recessive.

• A genotype with one dominant and one recessive allele.

What is the relationship between genotypes and phenotypes?

• Genotypes have no effect on phenotypes.

• Genotypes determine phenotypes; the genetic makeup influences the observable traits.

• Phenotypes are independent of genotypes.

• Phenotypes can alter genotypes over time.

What does 'Aa' represent in genetics?

• A homozygous dominant genotype

• A homozygous recessive genotype

• A heterozygous genotype, where one allele is dominant (A) and the other is recessive (a)

• An allele that is neither dominant nor recessive

What is the significance of generation numbers in a pedigree?

• They indicate the lineage and help track the inheritance of traits through different generations.

• They represent the age of individuals in the pedigree.

• They are used to identify the geographical origin of the family.

• They show the number of offspring produced by each individual.

What does a not shaded symbol represent in a pedigree chart?

• It indicates that the individual has the trait being studied.

• It indicates that the individual does not have the trait being studied.

• It represents a carrier of the trait.

• It signifies an unknown status of the individual.

How do you identify carriers of a recessive trait in a pedigree?

• Individuals who express the trait and have offspring that do not.

• Individuals who do not express the trait but have offspring that do.

• Individuals who express the trait and have offspring that also express the trait.

• Individuals who do not have any offspring.

What does a shaded symbol represent in a pedigree chart?

• It indicates that the individual is a carrier of the trait.

• It indicates that the individual has the trait being studied.

• It indicates that the individual does not have the trait being studied.

• It indicates that the individual is deceased.

What is a dominant trait?

• A trait that is expressed only when two recessive alleles are present.

• A trait that is expressed when at least one dominant allele is present.

• A trait that is always expressed regardless of the alleles present.

• A trait that is never expressed in the presence of a dominant allele.

What does 'aa' represent in genetics?

• A homozygous dominant genotype, where both alleles are dominant.

• A heterozygous genotype, where one allele is dominant and one is recessive.

• A homozygous recessive genotype, where both alleles are recessive.

• A genotype with one dominant and one recessive allele.

What are genotypes?

• Genotypes are the physical traits of an individual.

• Genotypes are the genetic makeup of an individual, represented by the alleles they possess.

• Genotypes are the environmental factors affecting an organism.

• Genotypes are the observable characteristics of an organism.