Final answer:
A child must have a combination of genetic markers from both parents for DNA fingerprinting to confirm their relationship. Intragenerational mobility, like an executive moving to a different class than their parents, is an example of social status change within one's lifetime. Mendel's model of inheritance explains the basics of heredity, but there are complex patterns that it can't fully explain.
Step-by-step explanation:
The concept of inheritance in biology indicates that a child inherits a unique combination of genetic material from both parents. DNA fingerprinting can confirm a child's relation to its parents by showing that the child's genetic material is a mix of the mother's and father's DNA. For a child to be related to both parents, half of the child's genetic markers used in DNA fingerprinting should match those of the mother, and the other half should match those of the father.
In terms of social mobility, intragenerational mobility refers to changes in social status within a person's lifetime. An example of this would be b. An executive belongs to a different class than her parents. Here, the executive has experienced a change in social class compared to their parents, which is a classic example of upward mobility within a generation.
Overall, patterns of inheritance show that while we inherit many characteristics from our parents, each sibling receives a different mix, except in the case of identical twins. This variation is because we inherit one allele for each gene from each parent, and these alleles can either be the same (homozygous) or different (heterozygous).
While Mendel's model of inheritance accounts for many traits passed down from parents to offspring, there are exceptions such as multiple alleles, co-dominance, and polygenic inheritance. These patterns can't be fully explained by Mendel's simplistic model but are important in understanding the complexities of heredity.