28 Questions
What is the relationship between MCR1 and skin color?
MCR1 converts pheomelanin to eumelanin
In the context provided, what does the presence of the 'dd' genotype indicate?
Average size phenotype
What is the role of Kittlg in skin color?
Kittlg is responsible for Asian light skin
How are the phenotypes affected in the case of a mutation in the FGR3 gene?
Multiple phenotypes with the same gene affected
What is the significance of polygenic inheritance in determining phenotypes like skin color?
Phenotype is determined by the accumulation of multiple gene products
Which type of disorders are typically recognized by striking familial inheritance patterns?
Monogenic disorders
What are examples of monogenic disorders according to the text?
Sickle cell anemia, cystic fibrosis, Huntington disease
In what type of disorders do multiple genes play a role along with environmental factors?
Complex disorders
Which statement is true about monogenic traits?
Monogenic traits are conferred by variation in a single gene.
What distinguishes monogenic disorders from complex disorders?
Inheritance patterns
Which of the following is NOT an example of a monogenic disorder?
Asthma
What term describes a single trait created through the interaction of multiple genes?
Epistasis
In the context of phenotypes, what does 'recessive' describe?
A gene that is only expressed when paired with another recessive gene
What type of gene action involves two genes working together to cause a particular phenotype?
Complementary gene action
What phenomenon is described as successive generations displaying accelerated, earlier-onset, or more severe disease manifestations?
Anticipation
In a paternity dispute scenario where O married A and had a B baby, which gene interaction type is likely involved?
Recessive Epistasis
In Mendel's experiments, each gene he studied behaved how with respect to each other?
Completely independent
In the context of Mendelian inheritance, which database includes a comprehensive listing of Mendelian and non-Mendelian traits and associated genes?
Online Mendelian Inheritance in Man (OMIM)
What is the term used to describe traits that do not follow the simple laws of Mendel's pea experiments?
Non-Mendelian traits
Which gender is mostly affected by colorblindness, according to the text?
Men
In the context of X-linked genes, what is the genetic makeup of men (excluding gametes)?
Haploid
What kind of pattern does colorblindness exhibit in terms of gender susceptibility?
Male-specific
What term describes a situation where someone who is heterozygous for a codominant trait will show both alleles?
Codominance
What term refers to a section of DNA that is copied more in some individuals and less in others?
Copy-number variation
In genetics, what is the term for traits that are influenced by genes not located on a sex chromosome but are expressed differently in males and females?
Sex-influenced trait
Which term is used to describe a trait resulting from genes expressed in one sex but 'silenced' in the other?
Sex-limited trait
What situation occurs when the phenotype of one gene is altered by the expression of a different gene in the same pathway?
Gene interaction
Which term describes a scenario where a trait does not affect 100% of individuals with a particular genotype?
Incomplete penetrance
Test your knowledge on Mendelian trait inheritance using a branching diagram. Explore the different possibilities of genetic inheritance through branches. Understand how genes behave independently of each other based on Mendel's discoveries.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
