STAAR Bootcamp - Category 2

Which sequence of DNA bases would pair with this partial strand
ATG TGA CAG

• ATG TGA CAG
• TAC ACT GTC
• GTA AGT GAC
• CAT TCA CTG

A segment of DNA is shown in the diagram. Which of these identifies the part of the DNA segment labeled X?

• Nucleotide

• Phosphate group

• Hydrogen bond

• Deoxyribose

Tags

B.6(A)

A genetic cross involving two unlinked genes is represented. AaGG x aaGg

Which genotype is NOT possible in the offspring produced by the cross?

• AaGG

• Aagg

• aaGg

• aaGG

A partial DNA segment and an mRNA codon chart are shown. 3′ TCATGCATG 5′

What amino acid sequence is encoded in the partial DNA segment?

• Serine – Threonine – Tyrosine

• Serine – Serine – Tyrosine

• Serine – Threonine – Methionine

• Serine – Alanine – Methionine

Tags

B.6(C)

8 A cellular process is shown. Which statement best describes the significance of this process?

• The process allows organisms to grow and heal.

• The process produces clones of the parent organism.

• The process copies DNA before cell division

• The process creates genetic variation in the resulting cells

Tags

B.6(G)

The arctic fox inhabits northern areas of North America. The same arctic fox is shown in the drawing at different times of the year. What causes this change in fur color?

• A) The alleles for fur color change as the arctic fox grows older.

• B) Gene expression for fur color is regulated by latitude.

• C) The arctic fox has two traits for fur color that are determined at birth.

• D) Gene expression for fur color is regulated by temperature.

A model of a biological process is shown.What is the purpose of this process?

• A) To replicate the DNA of an organism before cell division

• B) To assemble nucleotides in an mRNA chain along a DNA template

• C) To synthesize amino acids used to unzip strands of DNA and copy the genetic code

• D) To translate the genetic code into a specific sequence of amino acids

Which diagram demonstrates how crossing-over contributes to genetic variety during meiosis?

• 
• 
• 
• 

Which type of mutation does the model demonstrate?

• Deletion

• Substitution

• Insertion

• Translocation

A sequence of DNA undergoes the following change:

TAC ACA CAA ACG GGG → TAC ACA GGA ACG GGG

This mutation will cause the amino acid​ (a)   to be replaced by .​ ​ (b)  

• Valine
• Proline
• Cysteine
• Threonine
• Glutamine
• Glycine