24 Q E Biology PE

In a family tree, the dominant trait, curly hair, is represented by shaded symbols while straight hair is not shaded. The genotype of the non-shaded individuals, like Emma and Rohan, would be...

• Both are homozygous dominant (CC).

• Both are homozygous recessive (cc).

• Both are heterozygous (Cc)

• The male is homozygous dominant; the female is homozygous recessive.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Rowan is conducting a plant experiment with pea plants. In the F1 generation of a monohybrid cross (Ss x Ss), the phenotypic ratio of tall to short plants would be:

• 3:1

• 2:2

• 1:1

• 1:1:2

The pedigree chart below is for a family, some of whose members exhibit the recessive trait, wooly hair. Affected individuals are indicated by an open (non-shaded) square or circle. Use the chart to answer the following questions. What is the genotype of individual B-5?

• WW
• Ww
• ww
• WW or ww
• ww or Ww

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Aria is studying genetics and learns that tallness (T) is dominant to dwarfness (t), while red (R) flower color is dominant to white (r). The heterozygous condition (incomplete dominance) results in pink (Rr) flower color. She crosses a dwarf, red snapdragon with a plant homozygous for tallness and white flowers. What are the genotype and phenotype of the F1 individuals?

• ttRr - dwarf and pink

• ttrr - dwarf and white

• TtRr - tall and red

• TtRr - tall and pink

• TTRR - tall and red

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Evelyn is conducting a genetic experiment with plants. She notes the genetic traits of the seeds as follows: L = long, l = short, W = wrinkled, w = smooth. Which of the following is the genotype for a plant with short, wrinkled seeds?

• llWw

• LLWW

• LlWw

• llww

Tags

NGSS.HS-LS3-1

Benjamin learned in his biology class that genetic disorders occur because of ________________ (changes) that can happen in DNA copying.

• mutation

• transcription

• translation

• conversion

Tags

NGSS.HS-LS3-2

Charlotte is studying genetics and learns about a type of mutation that doesn't result in problems with the protein. What type of mutation is this?

• frameshift

• addition

• subtraction

• silent

Tags

NGSS.MS-LS3-1

In a biology class, Ethan is learning about different biological molecules. He comes across the terms: gly, ser, thr, arg. These terms are examples of

• DNA

• RNA

• amino acids

• nucleotides

• proteins

Tags

NGSS.HS-LS1-6

Liam is studying biology and learns that proteins are important because...

• they form structural units of cells.

• they form functional enzymes that speed up reactions.

• both

• neither

Tags

NGSS.MS-LS3-1

In a classroom experiment, Olivia is trying to understand why cells need to create an mRNA molecule for protein production. What is the reason behind this process?

• DNA can't produce proteins but mRNA can.

• mRNA is the building blocks of proteins.

• The DNA is in the nucleus and separated from the ribosomes.

• Ribosomes can only use amino acids to form the proteins.