Exploring Non-Mendelian Genetics Concepts

What is an example of a trait that exhibits codominance in human genetics?

• Hair color

• Blood type AB

• Height

• Eye color

What results from a cross between a heterozygous type A and a heterozygous type B parent?

• Only type AB children

• Children of any blood type

• Only type O children

• Only type A and B children

In incomplete dominance, what phenotype would result from a cross between a red flower (RR) and a white flower (rr)?

• A mix of red and white flowers

• All white flowers

• Pink flowers

• All red flowers

Which animal was used to demonstrate a dihybrid cross involving incomplete dominance in the video?

• Rabbits

• Fruit flies

• Sheep

• Mice

What is a key characteristic of sex-linked traits?

• They affect males and females equally

• They are more commonly expressed in males

• They are always dominant

• They skip generations

What does a pedigree help to determine?

• The number of alleles for a gene

• The linkage of genes on a chromosome

• The probability of offspring inheriting a trait

• The dominance of a trait

What is epistasis?

• A form of polygenic inheritance

• A form of dominance where one allele hides the effects of another

• A situation where the phenotype is not affected by the genotype

• A type of genetic linkage

Which trait is an example of polygenic inheritance?

• Blood type

• Skin color

• Color blindness

• Sickle cell disease

What does a low recombination frequency indicate about the position of genes?

• The genes are far apart on the same chromosome

• The genes are close together on the same chromosome

• The genes are not linked

• The genes are located on different chromosomes

What is the outcome of a genetic cross in linked genes compared to Mendelian genetics?

• All offspring are recombinants

• Less variation and more parental types

• More variation in offspring

• All offspring are mutants