What is the Genotype and Phenotype of Individuals with Different Earlobe Types?

a) What is the genotype for an individual who is homozygous dominant for unattached earlobes? Case and order of alleles matter. b) What is the genotype for an individual with attached earlobes? Case and order of alleles matter. c) List the genotype(s) and the possible number of times each genotype can occur in offspring from this potential mating. Case and order of alleles matter. d) List the phenotype(s) and the possible number of times each phenotype can occur in offspring from this potential mating.

Final answer: a) The genotype for an individual who is homozygous dominant for unattached earlobes is EE. b) The genotype for an individual with attached earlobes can be either heterozygous (Ee) or homozygous recessive (ee). c) The possible genotypes in the offspring from this potential mating are EE and Ee. d) The possible phenotypes in the offspring from this potential mating are unattached earlobes and attached earlobes.

Understanding Genotype and Phenotype for Different Earlobe Types

Genotype and Phenotype Explanation: To determine the genotype and phenotype of individuals with different earlobe types, we need to understand the inheritance pattern of the earlobe trait. Earlobes are determined by a single gene with two alleles: E for attached earlobes and e for unattached earlobes.

Genotype Explanations:

  • a) Genotype for Unattached Earlobes: The genotype for an individual who is homozygous dominant for unattached earlobes is EE. This means they have two copies of the dominant E allele.
  • b) Genotype for Attached Earlobes: The genotype for an individual with attached earlobes can be either heterozygous (Ee) or homozygous recessive (ee). The heterozygous individual has one copy of the dominant E allele and one copy of the recessive e allele, while the homozygous recessive individual has two copies of the recessive e allele.
  • c) Possible Genotypes in Offspring: When two individuals with different genotypes mate, their offspring can inherit different combinations of alleles. In this potential mating scenario, the possible genotypes in the offspring are EE and Ee.

Phenotype Explanations:

  • d) Possible Phenotypes in Offspring: The phenotype of an individual is determined by the combination of alleles they inherit. In this potential mating, the possible phenotypes in the offspring are unattached earlobes (EE) and attached earlobes (Ee).
Conclusion: Understanding the genotype and phenotype of individuals with different earlobe types can provide insights into the inheritance patterns of specific genetic traits. By analyzing the possible genotypes and phenotypes of offspring from potential matings, we can better understand how traits are passed down from parents to their children.
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