In a certain population, there exists a recessive disease which causes death by the age of 5 years. You study this population and discover that all the homozygous recessive individuals have died. Two years later, you find homozygous recessive individuals are back in the population. There has been no gene flow, so from where did these individuals come?

Q: You have a population of flies in a tank in your lab.  The population is in Hardy-Weinberg…

A: Hardy Weinberg equilibrium is a imaginary which considers if there is no evolution then the…

Q: A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken…

A: Introduction :- A mouse, or mice as a group, is a tiny animal. Mice have a pointed snout, short…

Q: A preserve contains the last population of the very rare desert pupfish which is only found in one…

A: * Given that thisnis the last population of desert pupfish with two colours silver and black. *…

Q: The image below shows how the Pokemon Charmeleon evolves into Charizard over generations. Pokemon…

A: Evolution is the process by which living organisms change over successive generations, leading to…

Q: How is it possible that a lethal recessive gene can be maintained in a population? Give an example.

A: Introduction Genes are the stretch of DNA that code for a specific protein and thereby regulate…

Q: You have a population of flies in a tank in your lab.  The population is in Hardy-Weinberg…

A: The Hardy-Weinberg principle is also known as Hardy-Weinberg equilibrium, model, theorem, or the…

Q: Human albinism is an autosomal recessive trait. Suppose that you find a village, where 25% of the…

A:

Q: Provided with the evidences on the picture, choose which of these represents descent with…

A: Natural selection as well as other factors can help these alterations get entrenched in a whole…

Q: Imagine three islands, each with a population of frogs. There are approximately 1,100 frogs on…

A: Introduction  A population is a group of living organisms of the same species that live in the same…

Q: In a certain population, a previously neutral, homozygous recessive gene (aa) becomes lethal through…

A: There is a populatiin with lethal condition of a homozygous gene (aa) ,  The frequency of the…

Q: Does the term gene pool apply to individuals, populations, or both?

A: The genes are the hereditary unit of an organism which are passed on from the parental generation to…

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…

Q: othetical population has two alleles for an alleles), the following genotypes were found: 15 TT, 25…

A: An allele frequency is calculated by dividing the number of times the allele of interest is observed…

Q: You set up two populations of fruit flies (Drosophila) in the lab in large enclosures. One…

A: In fruit flies (Drosophilia melanogaster) larvae, two foraging stratrgies are seen. These are sitter…

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: Why are some lethal recessive mutations such as Tay-Sachs disease not eliminated from a population?

A: Tay Sachs disease is an autosomally inherited disease. Tay-Sachs disease results in a deficiency of…

Q: Is natural selection random with respect to fitness?

A:

Q: Organisms heterozygous for a recessive trait are often called carriers of that trait. What does that…

A: Carriers of a trait are always heterozygous, and the trait is always recessive.

Q: If this model continues, with no major changes to the environment, what do you expect to happen? A)…

A: Natural selection can cause microevolution (change in allele frequencies), with fitness-increasing…

Q: A.) Based on the graph, determine whether or not the fruit fly population is evolving. Justify your…

A: Divergent evolution is the accumulation of differences across groups, which can lead to the…

Q: Scientists are studying two populations of the same species of sea turtle. One population is quite…

A: A mutation refers to the sudden change in the nucleotide sequence of the DNA. It can either happen…

Q: Genetic drift in a population affects the gene pool in which of the following ways? decrease in…

A: Genetic drift is an evolutionary changes in allelic frequencies of a population as a matter of…

Q: A population of 600 scorpions was split into four populations when irrigation canals were built…

A: Introduction :- Genetic drift is a random fluctuation in the frequency of alleles in a population…

Q: A species of mouse lives in California. One day 50 of these mice sneak onboard a boat and are taken…

A: There are various stated evolutionary mechanisms which are characterized based on how it affects the…

Q: NASA is planning on sending a colony of Snow Monkeys to mars to determine how evolution will…

A: The Hardy–Weinberg law depicts the connection among allele and genotype frequencies when a populace…

Q: Natural selection means that the environment favors survival of some genotypes. From where does…

A: Natural selection can also give certain people a reproductive edge over others. Natural selection…

Q: The Amish community in Eastern Pennsylvania stemmed from a small closed population of around 200…

A: The bottleneck effect is an evolutionary phenomenon where a population reduces significantly to a…

Q: In genetics, what does the term population mean? Pick any species you like and describe how its…

A: Genetics is a branch of biology, dealing with differences and resemblances of related organisms…

Q: You are tall, dark, and handsome but only average in intelligence. You want your future sons and…

A: The variations in the population are made by mutations, gene flow, genetic drift. These bring the…

Q: The inability to fold your tongue is an autosomal recessive trait.  Assuming that the population…

A: For, population in Hardy equilibrium,      P 2 + 2pq + q 2 = 1, and       p +q = 1 where, p =…

Q: A population of interbreeding birds has been split by a geological event after which the isolated…

A: Species divergence is the process in which two species evolve from common ancestor due to…

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: According to Darwin’s model of evolution, evolution can only occur if there is some variation…

A: Darwin's model of evolution is based on the idea of natural selection. The basic premise is that…

Q: 1) If a squirrel from the north rim and a squirrel from the south rim were put in the same room,…

A: Interbreed  Interbreeding is a technique to produce hybrids. This is more successful in case of…

Q: In New Zealand you begin to study the relationship between snails and their trematode parasites.…

A: Introduction :- Host and parasite relationship is of different types . It can be of obligatory , in…

Q: Britain’s Queen Victoria was a carrier for the allele that causes hemophilia and she passed this…

A: Hemophilia is a sex linked recessive genetic disorder in which blood doesn't clot normally.…

Q: If vestigial traits are no longer useful to an organism, why don't they evolve out of the…

A: Vestigial organs are those structures that are present in the body which had some sort of use for…

Q: In the absence of evolution, the only way of producing new variation of single genes is gene flow.…

A: Evolution is the cumulative change that has occurred over several generations by the accumulation of…

Q: Deleterious recessive alleles, such as the allele that causes cystic fibrosis, can persist in a…

A: Harmful or disease causing alleles are often recessive alleles. These can be inherited from…

Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.