Genetics Questions

What is the overall shape of a DNA molecule?

The two strands of a DNA molecule are said to run anti-parallel to each other, what does this mean?

DNA Polymerase pairs complementary nucleotides and binds them according to the base-pairing rules

What is the parental cross for the monohybrid?

What is the parental cross for incomplet dominance?

DNA Polymerase IIIMakes DNA on theLeading and LaggingStrands

Question: Based on the model you created in Activity 1, which of the following are true about the structure of a double stranded DNA molecule?Choices:▼A. The nucleotides in a single strand of DNA are held together by hydrogen bonds.B. The nitrogenous bases in one strand are held to the nitrogenous bases of the other strand by phosphodiester bondsC. In DNA, purine nucleotides (A&G) always form base pairs with purines, and pyrimidine nucleotides (C&T) always form base pairs with pyrimidineD. The diameter of a DNA molecule is the same along its entire length due to the specific complementary base pairing of the DNA nucleotides

Question: Activity 4: Determing the Template Strand from RNAChoices:▼Revelant observation from Activity 4B:(Choose One)A. 5'-CUAG-3' in RNA is complementary to 3'-GATC-5' in the upper DNA strandB. 5'-CUAG-3' in RNA is complementary to 3'-GATC-5' in the lower DNA strandPrinciples/Reasons:(Choose Two)C. RNA polymerase adds nucleotides to the 3' end of the new RNAD. RNA polymerase adds nucleotides to the 5' end of the new RNAE. The new RNA is base paired with the template strandF. The new RNA is base paired with the non-template strandClaim with linking:(Choose One)G. RNA polymerase made this RNA moving left to right along the upper DNA strand because (linking of observations and reasoning)H. RNA polymerase made this RNA moving left to right along the lower DNA strand because (linking of observations and reasoning)I. RNA polymerase made this RNA moving right to left along the upper DNA strand because (linking of observations and reasoning)J. RNA polymerase made this RNA moving right to left along the lower DNA strand because (linking of observations and reasoning)

Question: Activity 2: Put the following gene expression steps in order based on the simulationChoices:▼A. RNA polymerase moves along the DNA & creates an RNAB. RNA polymerase binds DNA & seperates the strandsC. DNA helix reforms & RNA polymerase falls off the DNAD. Positive transcription factor binds to the regulatory region

Question: Based on Activity 3 and the model of transcription shown here, which accurately describes the movement of RNA polymerase?Choices:▼A. Left to right across the page using strand 1 as the templateB. Right to left across the page using strand 1 as templateC. Left to right across the page using strand 2 as the templateD. Right to left across the page using strand 2 as templateE. Left to right across the page using strand 3 as the template

Question: From the PCA: This nucleotide is a monomer of which nucleic acid?Choices:▼A. DNA, because it contains a sugar, phosphate, and a nitrogenous baseB. RNA, because it contains a sugar, phosphate, and a nitrogenous baseC. RNA, because it has a 2' OHD. DNA, because it has a 2' OHE. DNA, because it has uracil

Question: Based on the simulation in activity 2, what is required to produce RNA?Choices:▼A. The ribosome must bind at the regulatory regionB. The positive transcription factor must bind at the regulatory regionC. The negative transcription factor must bind at the regulatory regionD. RNA polymerase must bind at the regulatory region

Question: Activity 3: Match the information description with the types of bonds (REFER TO IMAGE)Choices:▼A. Through formation of hydrogen bonds between deoxyribonucleotidesB. Through formation of phosphodiester bonds between ribonucleotides and deoxyribonucleotidesC. Through formation of phosphodiester bonds between ribonucleotidesD. Through formation of hydrogen bonds between ribonucleotides and deoxyribonucleotides

Question: See your completed RNA strand for Activity 3: Assuming the DNA tempate continues, to which part of which nucleotide of the transcribed strand is the next ribonucleotide added?Choices:▼A. The carbonyl group of uracilB. The hyrdoxyl group of uracilC. The animo group of adenineD. The carbonyl group of cytosineE. The phosphate of cytosine

What does Helicase and Topoisomerase do?

You are studying body color in an African spider and have found that it is controlled by a single gene with four alleles: B (brown), br (red), bg (green), and by (yellow). B is dominant to all the other alleles, and by is recessive to all the other alleles. The bg allele is dominant to by but recessive to br. You cross a pure-breeding brown spider with a pure-breeding green spider. Predict the genotype of the progeny. g, r, and y are exponents denoting the mutation.

In domestic chickens, some males display a plumage pattern called cock feathering. Other males and all females display a pattern called hen feathering. Cock feathering is an autosomal recessive trait that is exhibited in males only. What type of inheritance is exhibited by this trait?

A mother of blood type A gives birth to a child with blood type O. Which of the following could NOT be the blood type of the father?

You are studying a gene that controls ossicone (horn) length in giraffes. The wild-type long-ossicone allele (L) is dominant to the mutant short-ossicone (l) allele. However the L allele is only 60% penetrant. You cross two heterozygous giraffes. What proportion of offspring would you expect to exhibit the long ossicone phenotype? Assume the penetrance of L applies equally to both homozygotes and heterozygotes.

In a certain species of plant, flowers occur in three colors: blue, pink, and white. A pure-breeding pink plant is mated with a pure-breeding white plant. All of the F1 are blue. When the blue F1 plants are selfed, the F2 occur in the ratio 9 blue:3 pink:4 white. How many gene pairs control the flower color phenotype?