4. The roof rat (Rattus rattus) and the Norway rat (Rattus norvegicus) are unable to interbreed because their Fi progeny die during embryogenesis. This type of reproductive isolation is best described as: A. a post-zygotic barrier known as behavioral F, inferiority B. a post-zygotic barrier known as F2 hybrid breakdown C. a post-zygotic barrier known as ecological F, inferiority D. a post-zygotic barrier known as F, hybrid sterility E. a post-zygotic barrier known as F, hybrid inviability

Q: 7) Stabilizing selection favours a.convergent phenotypes b.intermediate phenotypes c.phenotypes at…

A: Stabilizing selection is one of the most common types of natural selection in evolution. It is a…

Q: 2. The bishop pine tree of central California (Pinus muricata), which produces pollen in April, is…

A: Isolation mechanisms are the phenomenon due to which the gametes of two species cannot fuse or in…

Q: Which of the following evolutionary mechanisms can introduce new new alleles into a population's…

A: Over repeated generations, evolution is defined as a variation in the genetic variation of…

Q: 1. List three places outside of Africa where sickle-cell anemia is fairly common in the indigenous…

A: A population is described as a group of individuals of the same species living and interbreeding…

Q: frequency of heterozygotes

A: The frequency of heterozygous individuals is equal to 2pq.

Q: A homologous trait:

A: Answer -  Homologous traits are any characteristics present in two different animals which share the…

Q: 4. When Asian rosefinches first arrived in the Hawaiian Islands (about 4.0 million years ago), they…

A: Speciation is the process of formation of new species which reproductively isolated from one…

Q: .Mechanical isolation

A: Mechanical isolation is a form of reproductive isolation which prevents 2 different species from…

Q: e genetic composition (e.g., genes, es) between distinct individuals. ch of the following processes…

A: Genetic variation is a phenomena in which the changes in the gene structure occurs. Genes are a made…

Q: Birds are more likely to form pair-bonds than mammals because … Group of answer choices: A. Bird…

A: Pair bond is a mating pair of male and female that serves great importance in species.

Q: 3. You have sampled a population in which you know that the percentage of homozygous recessive…

A: As per our guidelines, we are allowed to answer only one question. Kindly upload rest of the…

Q: As scientists in Canada traveled further north into colder climates measuring the size(mass) of…

A: Bergmann's rule is an ecogeographical rule that claims that larger creatures are found at higher…

Q: 1. The North American garter snake (Thamnophis) has a number of sympatric populations that can be…

A: * Allopatric speciation also called vicariant speciation is a type of speciation when populations…

Q: Which of the following describes two species that exhibit a prezygotic mechanism of reproductive…

A: Prezygotic isolation prevents the fertilization of eggs. In this question, we have to select the…

Q: 2. Male dragonflies of one species are unable to grasp the abdomen of female dragonflies of a…

A: "Isolation" is defined in biology as a phenomenon through which two species that could ordinarily…

Q: 4.  Behavior is the result of a.    neural networks. b.    hormonal interactions. c.    genetic…

A: Note: Please upload question no. 6 separately. Answer: 4 Introduction: Behaviour is the immediate…

Q: Imagine an altruistic behavior where the direct fitness cost to a donor is 6 and the indirect…

A: When an organism incurs a cost including the possibility of death in order to improve the fitness of…

Q: A mule illustrates the effect of which type of isolation mechanism? a.Mechanical isolation.…

A: Mechanical isolation, Temporal isolation, Hybrid inviability are most commonly seen in plants.

Q: here is a family tree. Assume that these livestock  A, C, D, E, F, and G are unrelated. a. What is…

A: Answer-  A a. F= 0.125 b. F= 0.5 c. F= 0.0078 d. F= 0.0019 e. F= 0.015

Q: 5. Hybridizations between Japanese rice (Oryza sativa japonica) and Indian rice (Oryza sativa ind…

A: The mechanisms shown by the F1 hybrids are the type of isolation mechanisms which were first…

Q: 2. Male dragonflies of one species are unable to grasp the abdomen of female dragonflies of a…

A: Note: As per Bartleby Guidelines For Remaining Answers Please Repost The Question. Introduction:…

Q: 3. The recessive allele foccurs with a frequency of 0.41 in a population of orange clownfish…

A: The Hardy-Weinberg principle describes a scenario in which the frequencies of alleles and genotypes…

Q: 4. The sheep (Ovis aries) and the goat (Capra hircus) are unable to interbreed (F, hybrids die early…

A: Speciation is the process of producing new species from the earlier existing species.

Q: 2. What does NOT happen to the hybrid zone when gene flow is established? O Hybrids cease to form. O…

A: A hybrid zone is a geographic region where two populations of closely related species or subspecies…

Q: 24. The Hardy-Weinberg equation accurately predicts allele frequencies for a population only if a.…

A: Hardy-Weinberg law states that in a large population, the gene frequencies of various kinds of genes…

Q: 10. The herbivorous Japanese ladybird beetle Henosepilachna yasutomii (which feeds on blue cohosh),…

A: Here,the answer is C)habitat isolation. The Japanese lady bird beetle Henosepilachna yasutomii grows…

Q: One hundred rabbits are introduced to a new environment. Fifty rabbits are brown and 50 are white.…

A: * Genetic drift refers to random fluctuations in frequencies of alleles from generation to…

Q: 5. The wood frog (Rana sylvaticus) is unable to breed successfully with the leopard frog (Rana…

A: Introduction :- F1 hybrids are formed in the F1 generation or first filial generation , when male…

Q: 1. The western coyote (Canis lupus latrans) can interbreed with the gray wolf (Canis lupus lupus) to…

A: Reproductive isolation is a process that prevents species from interbreeding. Prezygotic isolation…

Q: Benefits of domestication are to allow humans to: Select one: O A. Have a steady food supply O B.…

A: Domestication of animals is the relationship between animals and humans which is different from…

Q: Sexual selection can be driven by ________.   A. ecological factors favoring r-selected genotypes…

A: There are mainly two types of interaction:- 1) Positive interaction 2) Negative interaction Among…

Q: From these results, one can conclude that: a. Blue-footed booby parents encourage siblicide b.…

A: According to the given database the result is concluded that :- Masked booby nestlings are more…

Q: 21. What is an example of microevolution? Group of answer choices a.Anole lizards getting stickier…

A: Species diversity is a measure of biological variety seen in a certain ecological community,…

Q: If two recently diverged populations come into secondary contact and attempt to breed, Is/are a…

A: Secondary contact is the geographical reunification of two allopathically distributed species are…

Q: State how the overproduction of offspring in each species for many generations contributed to the…

A: The world as we know it is slowly being depleted of its natural resources. Habitats are being…

Q: 15. Identify the animal groups that are different varieties (or subspecies) within the same species.…

A: Species are considered as a basic unit of biological classification.It involves the grouping of…

Q: In human populations birth survival rates tend to increase towards children born with a more average…

A: Natural selection is a process through which organisms better adapted to the environment survive and…

Q: 6. Indicate whether the following statements about inbreeding are true (T) or false (F): If you find…

A: Introduction :- Inbreeding is the mating of genetically related individuals, such as siblings or…

Q: When studying the processes of speciation, we learned about situations when two closely related…

A: Reproductive isolation is an evolutionary mechanism that promotes speciation by preventing the…

Q: 1.What does a male cricket need to be able to reproduce?  2. Is calling good or bad for a cricket's…

A: As per our guidelines, we are supposed to answer only three sub-parts. Kindly repost the question…

Q: 27. Which of the graphs above shows that one extreme phenotype is favored, possessing a higher…

A: Natural selection is a theory that states that organisms evolved by changing their heritable traits…

Q: In the course of human evolution, we can see in the fossil record a tendency towards increasingly…

A: Selection is the result of all combined forces that cause survival difference as well as…

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.