BIOLOGY 101 EXAM 4 2026 ENERGY FLOW
AND FOOD WEB ANALYSIS ASSESSMENT
PAPER ANSWERS VERIFIED SUMMARY
SHEET
◉ Incomplete Dominance
Answer: in between two homozygotes
◉ Codominance
Answer: have both traits
◉ Polygenic
Answer: many genes, 1 trait (ex: eye color, height, skin color)
◉ Pleiotropy
Answer: 1 gene, many traits (ex: sickle-cell anemia, SRY gene)
◉ Linked traits
Answer: when traits are really close on a chromosome and cross
over
, ◉ Sex-linked traits
Answer: caused by genes that are found on X chromosome; more
prevalent in men since they only have 1 X chromosome (ex:
colorblindness, baldness)
◉ Your mom has light blond hair while your dad has brown hair. You
have blond hair; your sister has dirty blond hair and your brother
has light brown hair. That is, your family is a rainbow of hair color!
This is an example of what type of inheritance?
Answer: Polygenic trait
◉ You are breeding miniature schnauzers. You breed a black female
with a blond male and all of the pups are gray. This is an example of
what type of inheritance?
Answer: Incomplete dominance
◉ What law does linked traits violate?
Answer: law of independent assortment
◉ If a male is colorblind, from whom did he inherit the condition?
Answer: mother
◉ Example of a sex linked dominant trait
Answer: Rett syndrome
AND FOOD WEB ANALYSIS ASSESSMENT
PAPER ANSWERS VERIFIED SUMMARY
SHEET
◉ Incomplete Dominance
Answer: in between two homozygotes
◉ Codominance
Answer: have both traits
◉ Polygenic
Answer: many genes, 1 trait (ex: eye color, height, skin color)
◉ Pleiotropy
Answer: 1 gene, many traits (ex: sickle-cell anemia, SRY gene)
◉ Linked traits
Answer: when traits are really close on a chromosome and cross
over
, ◉ Sex-linked traits
Answer: caused by genes that are found on X chromosome; more
prevalent in men since they only have 1 X chromosome (ex:
colorblindness, baldness)
◉ Your mom has light blond hair while your dad has brown hair. You
have blond hair; your sister has dirty blond hair and your brother
has light brown hair. That is, your family is a rainbow of hair color!
This is an example of what type of inheritance?
Answer: Polygenic trait
◉ You are breeding miniature schnauzers. You breed a black female
with a blond male and all of the pups are gray. This is an example of
what type of inheritance?
Answer: Incomplete dominance
◉ What law does linked traits violate?
Answer: law of independent assortment
◉ If a male is colorblind, from whom did he inherit the condition?
Answer: mother
◉ Example of a sex linked dominant trait
Answer: Rett syndrome
