What process could explain a situation in which alleles that are favoured by natural selection (i.e....
What process could explain a situation in which alleles that are favoured by natural selection (i.e. those that confer high fitness) do not become fixed in a population?
Homework Answers
'The random fusion of gametes' is the process which leads to non fixation of favored allele in a population. Because the naturally selected individual has both advantageous and non advantageous allele. The individual produces gametes by the process of meiosis. These gametes have equal chances of random fusion with other gametes during fertilisation. That's why the unfavored allele persists in the population.
Add Answer to:
What process could explain a situation in which alleles
that are favoured by natural selection (i.e....
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
Questino 7. How I genetic drift different from natural selection? A. Natural Selection occurs because some...
Questino 7. How I genetic drift different from natural selection? A. Natural Selection occurs because some alleles confer higher fitness, whereas genetic drift occurs because of sampling error. B. Natural selection has a stronger effect in large population, whereas genetic drift acts primarily in small populations. C. Natural selection is a mechanism of evoltion, whereas genetic drift is not a mechnaism but an outcome of evolution. D. Natrual selection tends to cause very rapid evolution whereas gentic drift tends to...
A study by Siepielski and Benkman demonstrated phenotypic selection on pinecones by granivorous (seed-‐eating) birds. Specifically,...
A study by Siepielski and Benkman demonstrated phenotypic selection on pinecones by granivorous (seed-‐eating) birds. Specifically, they found that interactions between the birds and pine trees span from antagonistic (birds are predators and confer a fitness disadvantage to the pines) to mutualistic (birds still eat seeds, but they cache what they cannot eat and confer a dispersal benefit to the pines) depending on the number of seeds produced in a population. Assume seed production is determined by two alleles that...
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It...
Select the statements that accurately describe the effect of natural selection on genetic equilibrium: a. It can cause allele frequencies in a population to be in genetic equilibrium. b. It can cause a dominant allele for a gene to become more abundant in a population. c. It can cause an allele to become more abundant in a population if it provides a fitness advantage over other alleles for that trait. d. It is an evolutionary force that prevents natural populations...
Which statements about natural selection are true? A. it always results in adaptations perfectly suited for...
Which statements about natural selection are true? A. it always results in adaptations perfectly suited for the environment B. Select traits that are not currently fit, but could be in the future C. act on individuals, not species D. is a random process E. increases mean fitness of the population
We expect natural selection and genetic drift to both result in the fixation of alleles, which...
We expect natural selection and genetic drift to both result in the fixation of alleles, which seems like it should reduce average heterozygocity in populations – there should be very little observed variation. However, we observe a tremendous amount of variation in populations. What can explain this observation?
1. Describe how the process of natural selection works, and how it results in adaptations (Darwin's...
1. Describe how the process of natural selection works, and how it results in adaptations (Darwin's Observations and Conclusions) • How does unequal reproductive success lead to natural selection? What are adaptations? Explain Darwin’s observations and conclusions. • Describe evolution by natural selection? What are some important points about evolution? 2. Describe examples of and evidence for evolution by natural selection that can be seen in your daily life. 3. Discuss the different kinds of evidence that support the theory...
the process of natural selection requires which four prerequisties to operate. explain each and provide a...
the process of natural selection requires which four prerequisties to operate. explain each and provide a real or theoretical example
Which of the following accurately describes natural selection? A) Natural selection acts on pre-existing variation in...
Which of the following accurately describes natural selection? A) Natural selection acts on pre-existing variation in a population. B) Natural selection occurs when individuals shift to a different phenotype better suited to their novel environment. C) Populations become better adapted to novel environments as individuals with beneficial phenotypes reproduce more than others without that phenotype. D) Two of the above are correct. E) All of the above are correct.
Which of the following statements does not play a direct role in natural selection? Read all...
Which of the following statements does not play a direct role in natural selection? Read all choices before answering the question. a) Artificial selection. b) Individuals within the population, who have the greatest reproductive fitness, are those who produce the greatest number of offspring, who survive to reproduce the subsequent F2 ("grandkids") generation. c) A species will produce more offspring than environmental resources can support. Consequently, not all individuals survive and there is a competition for limited resources. d) Competition...
heterozygote disadvantage Natural selection is the process by which organisms with the best adapted phenotype are selected for by environmental conditions. anthropogenic events such as the use of DDT heterozygote advantage Allelic frequencies can change due to selection or they may change due to genetic drift. environmental conditions The process of natural selection relies on the presence of of a gene within a population. genetic drift Deleterious alleles may persist in the population particularly if they confer a single allele...
Which of the following statements does not play a direct role in natural selection? Read all choices before answering the question. a) Artificial selection. b) Individuals within the population, who have the greatest reproductive fitness, are those who produce the greatest number of offspring, who survive to reproduce the subsequent F2 ("grandkids") generation. c) A species will produce more offspring than environmental resources can support. Consequently, not all individuals survive and there is a competition for limited resources. d) Competition...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago