DNA Structure and Traits Unit Test

Master DNA structure & traits! Test your knowledge on genetics, Punnett squares, and more.

Complete the blanks by clicking on the word choice in the drop down menu. Word Bank: Double Helix, Ladder, Phosphate, Sides, Nitrogen Bases DNA Structure:The shape of DNA is known as a Double Helix.The shape looks like a twisted ladder.The phosphate and sugar form the backbone or sides of the DNA ladder, while the nitrogen bases form the steps or middle of the DNA ladder. Match the base pairs by connecting the left side to the right side. Base Pairs: Adenine (A), Thymine (T), Guanine (G), Cytosine (C). Adenine (A) Thymine (T) Guanine (G) Cytosine (C) Thymine (T) Adenine (A) Cytosine (C) Guanine (G) DNA Quick Facts Select the answer to each question. 1. WHERE is DNA located? Nucleus 2. WHAT does DNA do? Genetic Code Matching Match the vocabulary word to the correct definition.Word Bank: Genotype, Phenotype, Hybrid, and Purebred. Genotype A two letter code (BB) Phenotype Physical Appearance Hybrid Different letter codes (Bb) Purebred Same letter codes (bb) Use this picture to answer the following two questions.R = Able to Roll Tonguer= Not Able to Roll Tongue What is the likelihood (percentage) of this offspring being able to roll their tongue? 25% 50% 75% 100% What is the likelihood (percentage) of this offspring NOT being able to roll their tongue? 25% 50% 75% 100% What phenotype is rr? Able to roll tongue NOT able to roll tongue