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Multiple Choice
How can Mendel's principles be applied to study the inheritance of human traits?
A
By analyzing the segregation of alleles in human pedigrees
B
By observing the blending of traits in offspring
C
By examining the role of mutations in trait development
D
By studying the environmental impact on gene expression
Verified step by step guidance
1
Understand Mendel's principles: Mendel's principles of inheritance include the law of segregation and the law of independent assortment. These principles describe how alleles (different forms of a gene) segregate and assort independently during the formation of gametes.
Apply the law of segregation: In human pedigrees, the law of segregation can be observed by tracking how alleles are passed from parents to offspring. Each parent contributes one allele for a trait, and these alleles segregate during gamete formation.
Analyze human pedigrees: Pedigrees are charts that show the inheritance patterns of traits across generations. By analyzing pedigrees, we can observe how alleles segregate and determine the likelihood of an individual inheriting a particular trait.
Consider the role of dominant and recessive alleles: In pedigrees, traits can be dominant or recessive. Dominant traits require only one allele to be expressed, while recessive traits require two. This helps in predicting the inheritance patterns in human pedigrees.
Evaluate the impact of mutations and environment: While Mendel's principles focus on genetic inheritance, it's important to consider that mutations can introduce new alleles, and environmental factors can influence gene expression, affecting the phenotype.