Introduction To Genetics And Evolution Coursera Quiz Answers

Before you understand evolution, you must understand the molecule that mutates: DNA.

Q1: Which of the following is NOT an assumption of Hardy-Weinberg equilibrium?

Answer: D Explanation: HWE assumes no mutation, or that mutation is negligible. High mutation violates equilibrium.

Q2: In a population of 100 individuals, 36 have the recessive phenotype (aa). Assuming HWE, what is the frequency of the ‘a’ allele?

Answer: C (0.6) Explanation: Recessive phenotype frequency (q^2) = 36/100 = 0.36. So q = sqrt(0.36) = 0.6.

Q3: Using the same population (q=0.6), what is the frequency of heterozygotes (Aa)?

Answer: C (0.48) Explanation: If q=0.6, then p=0.4. Heterozygotes = 2pq = 2 * 0.4 * 0.6 = 0.48.

Q4: Genetic drift has the greatest effect on:

Answer: B Explanation: Drift is the random change in allele frequencies due to sampling error. This is most pronounced in small populations.

Q5: Founder effect is a type of:

Answer: C Explanation: When a small group colonizes a new area, the new population’s gene pool is a non-random sample of the original (drift). introduction to genetics and evolution coursera quiz answers

Q1: Which of the following correctly lists the order of phases in Meiosis I?

Q2: During which phase of meiosis does crossing over occur?

Q3: If an organism has a diploid number (2n) of 16, how many chromosomes are in each gamete?

Q4: True or False: Mitosis produces genetically identical daughter cells, while meiosis produces genetically diverse gametes.

Week 1 Challenge Problem: A cell has 6 chromosomes. After DNA replication but before meiosis I, how many sister chromatids are present?

This week moves from chromosomes to inheritance patterns. You will solve Punnett squares and pedigree analysis.

Q1: A mutation changes a codon from UAC (Tyrosine) to UAU (Tyrosine). This is an example of:

Q2: A frameshift mutation is most likely caused by:

Q3: Which of the following is true regarding transcription?

Q4: A nonsense mutation results in:

Advanced Question: If a DNA sequence is 5'-ATGC-3' on the coding strand, what is the mRNA sequence?

In conclusion, the "Introduction to Genetics and Evolution" course on Coursera is a great resource for learning about the fundamental principles of genetics and evolution.

By following the tips and resources provided, you can gain a deeper understanding of these complex topics and achieve success in the course.

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In conclusion, the "Introduction to Genetics and Evolution" course on Coursera provides a comprehensive overview of the fundamental principles of genetics and evolution. By reviewing the course materials, practicing with quizzes and assessments, and seeking help when needed, you can gain a deeper understanding of these complex topics. Before you understand evolution, you must understand the

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Q1: In pea plants, purple flowers (P) are dominant to white (p). A homozygous dominant plant is crossed with a white-flowered plant. What percentage of the F1 offspring will be purple?

Answer: D (100%) Explanation: PP x pp = all Pp heterozygotes. Since P is dominant, all show purple.

Q2: In a test cross, an individual with a dominant phenotype (but unknown genotype) is crossed with a:

Answer: C (Homozygous recessive) Explanation: Crossing with a recessive (e.g., pp) reveals the unknown's genotype. If any offspring show the recessive trait, the unknown was heterozygous.

Q3: A man with type AB blood and a woman with type O blood have a child. What is the probability the child has type B blood?

Answer: C (50%) Explanation: AB genotype = I^A I^B. O genotype = ii. Possible offspring: I^A i (Type A) or I^B i (Type B). 50/50.

Q4: X-linked recessive disorders (like hemophilia) are more common in males because:

Answer: B Explanation: Males are hemizygous for X genes. They lack a second X to mask a recessive mutation.

Q5: What is the expected phenotypic ratio from a dihybrid cross (RrYy x RrYy) assuming independent assortment? Answer: D Explanation: HWE assumes no mutation, or

Answer: C (9:3:3:1) Explanation: 9 round yellow, 3 round green, 3 wrinkled yellow, 1 wrinkled green.