There five conditions to achieve the Hardy-Weinberg equilibrium. Which of the condition is mainly caused by environmental factors? Mutation Migration Random mating Natural selection Which of human genetic can be estimated through Hardy-Weinberg equation? Turner syndrome sex Down syndrome Thalasemia Number of individuals is important in a population. Why? Small changes in allele frequencies of small population give big impact to the next generation. Big changes in allele frequencies of large population impact less to next generation. Death of individuals in a small population makes change the allele's frequencies in the next generation. How migration influences allele frequencies? Contributing new alleles Change the number of individuals Change the mode of reproduction Recessive allele frequencies are calculated first. Why? Genotype of homozygous recessive allele is expressed Recessive alleles are small in numbers Easy to be calculated than the dominant alleles
Added by Steven W.
Close
Step 1
Calculate the allele frequencies of the population. Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 52 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Hardy-Weinberg equations You are studying a population of cavefish. Their genotypes and phenotypes follow. AA: normal coloration Aa: normal coloration aa: albino You sample the population and find that 12% of the exhibits albinism. Find the following: the frequency of the dominant allele (p), the frequency of the recessive allele (q), and the proportion of heterozygous individuals. --- Five years later, you return with more funding. You can now assess the genotype of every individual you catch. You sample 100 individuals. Their genotypes are as follows AA: 21 Aa: 42 aa: 37 Find the frequency of dominant alleles (p) and the frequency of recessive alleles (q) -- Compare the p and q values from questions one and two. Is the population in Hardy-Weinberg equilibrium? If the population is evolving what is the likely mechanism, genetic drift, mutation, selective mating, immigration, or natural selection? Please defend your answer.
Adi S.
The Hardy Weinberg theorem describes a non-evolving population, a gene pool that remains constant over time. For the following population: In a population with two alleles for a particular locus, A and a, the allele frequency of A is 0.7. Of the 20,000 turtles in the population, approximately 1,800 express the recessive phenotype for this particular gene. A) Identify whether or not the population is in Hardy-Weinberg equilibrium and calculate the allele and genotypic frequencies in the population’s gene pool. B) Identify three of the main conditions that must be present in order for a population to be in Hardy-Weinberg equilibrium. C) Describe three of the main factors that can act to alter gene frequencies and cause microevolution to occur.
Josee P.
Scientists are studying the allele and genotypic frequencies for a specific gene locus. The trait is expressed in two distinguishable phenotypes. The numbers observed for five generations of the population are shown in the table below Generations | Homozygous Dominant | Heterozygous | Homozygous Recessive | Total --- | --- | --- | --- | --- 1 | 19 | 38 | 46 | 103 2 | 90 | 180 | 3 | 273 3 | 85 | 171 | 83 | 339 4 | 101 | 202 | 111 | 414 5 | 143 | 284 | 54 | 481 a) Calculate p and q for each generation shown above b) Based on an analysis of the data, make a claim about whether the population is in Hardy-Weinberg equilibrium over the five generations c) Based on the evidence in the table justify your claim d) Describe one condition that is required for Hardy-Weinberg equilibrium to be maintained
Sri K.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD