Non‑Coding DNA Functions
About this percent of DNA is coding (genes).
What is 1%?
The enzyme that breaks lactose into smaller sugars.
What is lactase?
The unusual phenomenon where adults continue to produce lactase is called this.
What is lactase persistence?
On which chromosome is the lactase gene located according to the investigation?
What is chromosome 2?
Valentine's Day falls on this date every year.
What is the 14th
Long stretches of DNA not composed of genes are called this.
What is non‑coding DNA?
The two smaller sugars produced when lactase breaks lactose apart.
What are glucose and galactose?
Most humans are described as this because their lactase gene has been silenced as they age.
What is lactose intolerant?
Table 1 lists sequences for the lactase gene alleles for Kanna, her mother, her brother, and Alissa — what does Table 1 show about those coding sequences?
What is: all individuals have the same lactase gene sequences (allele 1 and allele 2 identical across people)?
This city hosted the most recent Super Bowl.
What is Santa Clara, California
Non‑coding DNA at the edges of chromosomes that helps protect coding DNA is called this (term used in the text).
What is a protective role (telomeres described as protective in the text)
Without lactase, lactose cannot be absorbed and can cause these digestive problems (two examples given in the text).
What are diarrhea and other digestive problems (illness)?
As babies, virtually all mammals produce this enzyme to digest breast milk.
What is lactase?
Table 2 lists sequences upstream of the lactase gene — which individual has a different upstream copy compared to the others?
Who is Alissa?
This team won the most recent Super Bowl.
What is the seahawks
Non‑coding DNA located near a gene that can turn it on/off or alter how much protein is made is called this function.
What is a regulatory function?
The cells that produce lactase are located in this part of the digestive system (as stated).
What are the cells lining the small intestine?
The text explains lactase can be slowed or silenced by DNA stretches that do this to the gene.
What is regulate/stop production (turn off or slow down the gene)?
Give the exact upstream sequence difference listed for Alissa (copy with the change), using the text.
What is: Copy 2 = TTA‑CGG‑TAA‑A CT‑AAT‑GCC‑AA (Alissa) compared to TTA‑CGG‑TAA‑ATT‑AAT‑GCC‑AA in the others?
In CER, this part is the one‑sentence statement that answers the guiding question (no evidence).
What is the claim?
The text says a mutation in this part of DNA can stop silencing of the lactase gene and cause lactase to continue into adulthood.
What is non‑coding DNA (a mutation in non‑coding regulatory DNA)?
Lactase pills come from lactase isolated from these organisms (two examples from the text).
What are yeast and bacteria?
According to the Non‑coding DNA Text, how does a mutation in non‑coding DNA cause lactase persistence? (short phrase from text)
What is: the mutation stops the silencing (keeps active) of the lactase gene so individuals continue to produce lactase into adulthood?
Using only the investigation text: describe in one sentence the relationship between Figure 1 and Tables 1–2.
What is: Figure 1 locates the lactase gene on chromosome 2, Table 1 shows the lactase coding sequences are identical across individuals, and Table 2 shows a difference upstream of the lactase gene in Alissa?
Who performed at the superbowl 2026?
What is Bad Bunny?