Deer mice are usually found in the woods and are dark brown in color. The deer mice that live in the Sand Hills of Nebraska, however, have evolved a lighter coloring, the result of a change in one gene. A scientist decides to move a population of brown deer mice to a habitat composed of a mixture of sandy areas and dark rocks. After monitoring the population for several generation, she finds that it is composed of a mixture of very light and very dark colored mice. What type of selection has occurred? *

Q: In a population, there is a wildtype allele designated A1. It has a frequency of 0.7.  A mutation…

A: Hardy-Weinberg equations can be applied to any population. The Hardy-Weinberg Theorem, therefore,…

Q: When Homo sapiens migrated out of Africa they encountered a related species, Homo neanderthalensis,…

A: Understanding human evolution is crucial as it provides a genetic roadmap of our species’ history.…

Q: "Ancestry tests" are sold by many companies. There are significant limitations to these tests. Why…

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A: This principle states that the gene frequency remains constant from generation to generation and is…

Q: The farmer used the same pesticide in all of the years between 2006 and 2018. Explain why there was…

A: Organophosphates, carbamates and pyrethroids are the three classes of pesticides that are frequently…

Q: Microbiologists have discovered that alleles associated with antibiotic resistance are present in…

A: Microbiology is the branch of biology that deals with study of organisms that are too small to be…

Q: You do a testcross to map three genes, Ph, T, and Qc. In the table below, you will find the number…

A: A test cross is a breeding experiment performed in genetics to determine the genotype of an…

Q: Imagine that you travel around the world and find two populations of  fish that look very similar,…

A: Introduction Variation among animals can be due to the genetic effects or can be due to the…

Q: Taita thrush is an endangered bird endemic to Kenya. Galbusera and colleagues genotyped Taita thrush…

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Q: . Calculate the frequency of heterozygous carriers for a disorder caused by an autosomal recessive…

A:

Q: Let's say you are walking around the fish market and you see a vendor selling . You purchase one…

A: Essential fatty acids are found in rockfish and striped bass, which your body cannot produce on its…

Q: What is the p-value you calculated (record two decimals)? You can use this online calculator .

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Q: Suppose 40 percent of people living in a remote, isolated mountain village can taste…

A: According to Hardy Weinberg equation in the absence of external forces the allele and genotype…

Q: Which gene  is inherited from the father only?

A: A gene is a stretch of nucleotides present in the DNA molecule. It encodes information for the…

Q: House cats normally have 18 toes. However, they can have up to 27 toes. The condition of having more…

A: Genetic drift is a mechanism of evolution that causes changes in the frequencies of alleles in a…

Q: ) The year is 2050. The climate has continued to warm. Areas in northern Canada and Alaska are…

A: There are few important points which should kept in mind these are : Every organism requires…

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A: Extra toes or extra fingers in legs and hands respectively is called as polydactyly.

Q: A population consists of 7 mice. For the coat color trait, there are only two alleles: brown (B) and…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: A farmer plants transgenic Bt corn that is genetically modified to produce its own insecticide. Of…

A: Transgene is a segment of a gene that is either naturally transferred or artificially introduced…

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Q: 3 butterflies are crossed with the line 5 butterflies and they produce all extra-long bodies, what…

A: In complementation, parents are either mutated with same genes or mutated in different genes. In…

Q: You are studying cushion plants in New Zealand: the wild-type cushion plan has a wide canopy. You…

A: When the nucleotides sequences in the genome of an organism are altered or changed due to mistakes…

Q: You are studying an isolated population of irises on an island off the coast of Maine. Plants in…

A: To determine if the population is in Hardy-Weinberg Equilibrium (HWE), we need to compare the…

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A: The allelic frequency is calculated by number of that alleles/total number of alleles.

Q: What is interspecific hybridization. Give an example?

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A: Gel electrophoresis is used to separate the DNA fragments on the basis of their size.

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Q: After graduation, you and 19 of your closest friends charter a plane to go on a round-the-world…

A: A non-evolving population in which the frequency of alleles and genotypes stays constant from…

Q: Imagine a huge population with a gene that has ten functionally equivalent, neutral alleles. a small…

A: A huge population with a gene that has ten functionally equivalent, neutral alleles and if a small…

Q: body, with deep red red tail feathers. An international co breeding these birds in an attempt to…

A: Gene is the basic unit of heredity. Two or more alternative forms of a gene, which arise by the…

Q: How many total alleles for wing pattern are there in the gene pool of this population? If two of…

A: Gene Pool: it refers to the total set of all the copies of all genes present in a particular…

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A: Organophosphates, pyrethroids, and carbamates are the three classes of insecticides that are used…

Q: The bolworm is a pest that eats and damages corn crops. During their short lifespans, Bollworms…

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Q: A population of diploid, outbreeding, sexuall-reproducing rodents, population A, lives on a small…

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Genetic Variation

Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.

Quantitative Genetics

Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.