The video tutorial explains inherited traits, starting with the basics of traits and inheritance. It covers the role of DNA, genes, and chromosomes in inheritance, and introduces the concept of alleles as different forms of the same gene. The tutorial discusses dominant and recessive traits, explaining how they determine the traits of offspring. It also explores more complex genetic patterns like incomplete dominance, where traits blend, and codominance, where both traits are expressed simultaneously.

What is the primary function of DNA in living organisms?

• To provide energy

• To protect the cell

• To code all the information needed for functioning

• To transport nutrients

Tags

NGSS.MS-LS3-1

Where are genes located?

• In the mitochondria

• On chromosomes

• In the cytoplasm

• On the cell membrane

Tags

NGSS.MS-LS3-1

What is an allele?

• A different form of the same gene

• A type of chromosome

• A dominant gene

• A section of DNA

How many alleles does an offspring inherit for each trait?

• Three

• One

• Two

• Four

What determines if a trait will be dominant or recessive?

• The age of the parents

• The environment

• The diet of the offspring

• The combination of alleles

If an offspring inherits a dominant allele from one parent and a recessive allele from the other, which trait will show?

• Both traits equally

• The recessive trait

• The dominant trait

• Neither trait

What is incomplete dominance?

• When one allele is completely dominant over the other

• When both alleles are expressed equally

• When neither allele is expressed

• When an intermediate form of a trait is expressed

Which of the following is an example of incomplete dominance?

• A red flower from red and white parents

• A gray sheep from a white and black parent

• A black and white spotted cow

• A blue-eyed child from brown-eyed parents

What is codominance?

• When alleles blend to form an intermediate trait

• When neither allele is expressed

• When both alleles are expressed at the same time

• When one allele is dominant over the other

Which of the following is an example of codominance?

• A horse with both brown and white hairs

• A red flower from red and white parents

• A gray sheep from a white and black parent

• A blue-eyed child from brown-eyed parents