Genetics and Inheritance Concepts

The video tutorial by Mr. Vev covers complex patterns of inheritance, including incomplete dominance, co-dominance, multiple alleles, and polygenic traits. Incomplete dominance is illustrated with beta fish, where heterozygous individuals show a mix of traits. Co-dominance is explained using corn color, where both alleles are expressed simultaneously. Multiple alleles are discussed with examples like bunny coat color and human blood types. Finally, polygenic traits such as eye color and skin color are explored, highlighting the influence of multiple genes.

What is the result of mating a green beta fish with a steel blue beta fish?

• Green beta fish

• Steel blue beta fish

• Red beta fish

• Royal blue beta fish

In co-dominance, how are the alleles expressed?

• Neither allele is expressed

• Only one allele is expressed

• Both alleles are mixed

• Both alleles are expressed simultaneously

What is the result of crossing yellow and black corn in terms of kernel color?

• Kernels are green

• All kernels are yellow

• Kernels are either yellow or black

• All kernels are black

How many alleles control human blood type?

• Five

• Two

• Three

• Four

Which blood type is considered recessive?

• Type A

• Type O

• Type B

• Type AB

What happens if an RH negative mother has a second RH positive child?

• The child will have a different blood type

• Nothing happens

• The mother's antibodies may attack the child's red blood cells

• The child will be RH negative

What is a polygenic trait?

• A trait that is always dominant

• A trait that is always recessive

• A trait controlled by two or more genes

• A trait controlled by a single gene

Which of the following is an example of a polygenic trait?

• Blood type

• Eye color

• Corn kernel color

• Beta fish color

What determines the range of skin colors in humans?

• Environmental factors only

• Dietary habits

• A single gene

• Multiple genes

What is the chance of two blue-eyed parents having a brown-eyed child?

• 100%

• 50%

• 25%

• 0%