The bollworm is a pest that eats and damages corn crops. During their short lifespans, Bollworms hatch, eat,mate, and lay eggs which hatch the following spring, In order to save her business, a local farmer has chosen touse a pesticide toxin that's deadly to 90% of bollworms. The remaining 10% of the bollworm population iscarries a rare inheritable gene that makes them immune to the toxin.The farmer switches to using the pesticide in 2006. At first, this seems to solve her problem: her first cropshowed very little sign of bollworm damage. As time went on however, the modified corn plants began to showincreasing signs of damage. Less than 10 years later, the plants showed nearly the same damage as the originalcrops.WNon-Immune ImmuneYearBolworms BollwormsBollworm Population Over Time600200248447500200450450400Not immuneto toxin20065010300200811020200201023515Immune to100taxin2012350202014470102002 2004 2006 2008 2010 2012 2014 2016- 2018201649515Year201849220Evidence of differential survival and reproductionThe farmer used the same pesticide in all of the years between 2006 and 2018. Explain why there was such alarge drop in the worm population in 2006 but then the total number of worms increased back up over the next10 years. Explain how this relates to the idea of differential survival and reproduction.DELLF5F6F7F8F9F10F11F12PrtScrInsert The bollworm is a pest that eats and damages corn crops. During their short lifespans, Bollworms hatch, eat,mate, and lay eggs which hatch the following spring, In order to save her business, a local farmer has chosen touse a pesticide toxin that's deadly to 90% of bollworms. The remaining 10% of the bollworm population iscarries a rare inheritable gene that makes them immune to the toxin.The farmer switches to using the pesticide in 2006. At first, this seems to solve her problem: her first cropshowed very little sign of bollworm damage. As time went on however, the modified corn plants began to showincreasing signs of damage. Less than 10 years later, the plants showed nearly the same damage as the originalcrops.WNon-Immune ImmuneYearBolworms BollwormsBollworm Population Over Time600200248447500200450450400Not immuneto toxin20065010300200811020200201023515Immune to100taxin2012350202014470102002 2004 2006 2008 2010 2012 2014 2016- 2018201649515Year201849220Evidence of differential survival and reproductionThe farmer used the same pesticide in all of the years between 2006 and 2018. Explain why there was such alarge drop in the worm population in 2006 but then the total number of worms increased back up over the next10 years. Explain how this relates to the idea of differential survival and reproduction.DELLF5F6F7F8F9F10F11F12PrtScrInsert

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

The farmer used the same pesticide in all of the years between 2006 and 2018. Explain why there was such a large drop in the worm population in 2006 but then the total number of worms increased back up over the next 10 years. Explain how this relates to the idea of differential survival and reproduction.

The farmer used the same pesticide in all of the years between 2006 and 2018. Explain why there was such a large drop in the worm population in 2006 but then the total number of worms increased back up over the next 10 years. Explain how this relates to the idea of differential survival and reproduction.

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter17: Genes And The Immune System

Section17.8: Disorders Of The Immune System

Problem 2EG

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When you are visiting the local pet store you start talking to them about their Ceti alpha-5 eel colony. They tell you that some eels have red antennas, some have white antennas, and some have pink antennae. Whenever you cross an eel with red antennae to an eel with white antennae you only recover eels with pink antennae. If you assume antennae color is under the control of one gene and you cross two eels with pink antennae what would you predict would be the genotypes and phenotypes of the progeny? How would you explain these results? (Describe why the expected results from ‘a’ would happen.)
Honeybees are unusual in that male bees (drones) have only onecopy of each gene, but female bees have two copies of their genes.This difference arises because drones develop from eggs that havenot been fertilized by sperm cells. In bees, the trait of long wingsis dominant over short wings, and the trait of black eyes is dominant over white eyes. If a drone with short wings and black eyeswas mated to a queen bee that is heterozygous for both genes, what are the predicted genotypes and phenotypes of male and femaleoffspring? What are the phenotypic ratios if we assume an equalnumber of male and female offspring?
You picked up two mice (one female and one male)that had escaped from experimental cages in the animalfacility. One mouse is yellow in color, and the other isbrown agouti. (Agouti hairs have bands of yellow,while non-agouti hairs are solid-colored.) You knowthat this mouse colony has animals with different alleles at only three coat color genes: the agouti (A) ornon-agouti (a) or yellow (AY) alleles of the A gene(AY> A > a; AYis a recessive lethal), the black (B) orbrown (b) alleles of the B gene (B > b), and the albino(c) or non-albino (C) alleles of the C gene (C > c; cc isepistatic to all other phenotypes). However, you don’tknow which alleles of these genes are actually presentin each of the animals that you’ve captured. To determine the genotypes, you breed the two escaped mice together. The first litter has only three pups. One is albino,one is brown (non-agouti), and the third is black agouti.a. What alleles of the A, B, and C genes are present inthe two mice you…
Lou, a researcher, is examining two different fireflies, and each firefly is homozygous for a mutation that is inherited in an autosomal recessive manner. Lou has discovered that the two fireflies both show defects in flying. Lou would like to determine if both fireflies have mutations in the same or different genes, so he mates the two fireflies together. The resulting offspring all can fly normally. What would this result suggest? Select all that apply. Group of answer choices A) The two parent fireflies contain mutations in different genes B) The two parent fireflies contain mutations in the same gene C) This is an example of complementation D) This is an example of the failure to complement
The delta-32 mutation, a recessive gene, gives humans protection from HIV infection. The allele frequency in a town in Sweden is 20%. What percent of the population have two copies of the gene and are therefore immune to HIV? What percent of the population are less susceptible to the disease since they are heterozygous?
This research exploited the principles of Mendelian genetics combined with the MCR technique to genetically manipulate fruit flies. Now, suppose you do a similar experiment. You perform two crosses: one that allows for Mendelian patterns of inheritance, and another that uses MCR with CRISPR-Cas9 to genetically edit the eye color of fruit flies. In fruit flies, the gene for eye color is located on the X chromosome. Red eyes (wild type, w+) are dominant to white eyes (mutant, w-). Let’s see how well you can predict genotype and phenotype ratios resulting from the two crosses. Genetic cross 1 (without MCR): Cross between a white-eyed male and a homozygous red-eyed female. Genetic cross 2 (with MCR): Cross between an MCR-element (carries the CRISPR-Cas9 construct) white-eyed male and a homozygous red-eyed female. Keep in mind, this technology converts a heterozygous genotype to a homozygous recessive genotype. Drag the labels to the table to fill in the genotypic and phenotypic ratios.
In humans, there is a gene called sickle-cell anemia, which produces severe anemia when homozygous recessive. The name of the disease comes from the fact that many red blood cells take on abnormal sickle shape. People homozygous recessive for this trait usually die before adulthood. Heterozygous people appear normal, but when a sample of the blood is held under low oxygen concentration, the red cells take on the sickle shape. A young woman about to be married is concerned about her future children because her brother died of sickle-cell anemia. A sample of her blood sickles under low oxygen concentration, but that red blood of her perspective husband remains normal. What can you say about the woman and the man, and about their future children? HINT: Use Punnett square to help you and receive full credit
In humans, there is a gene called sickle-cell anemia, which produces severe anemia when homozygous recessive. The name of the disease comes from the fact that many red blood cells take on abnormal sickle shape. People homozygous recessive for this trait usually die before adulthood. Heterozygous people appear normal, but when a sample of the blood is held under low oxygen concentration, the red cells take on the sickle shape. A young woman about to be married is concerned about her future children because her brother died of sickle-cell anemia. A sample of her blood sickles under low oxygen concentration, but that red blood of her perspective husband remains normal. What can you say about the woman and the man, and about their future children?
How can you use this piece of information to help you explain to your friends what is the significance of mutations in the emergence of new genetic properties (alleles) that may result (or not) in new phenotypic characteristics? (Recall that not all SNPs affect phenotype.)
The zebra fish is a very popular aquarium pet fish that is known to be hardy, attractive, and able to survive well in groups. Wild type zebra fish have blue–purple horizontal stripes that run from gill to tail, with a silver–gold body. An alternative form of the zebra fish results from a mutation that causes a homozygous recessive red-colour fish. Could you kindly answer all of the questions? It's multiple choice so minimal explanation is needed and i do not have a lot of questions left. Thank you. a) If 32 of 84 zebra fish have the recessive phenotype of red colour, what is the frequency of the recessive allele in this population of fish? a. 0.62 b. 0.38 c. 0.14 d. 0.79 b) What percentage of the population of zebra fish are heterozygous? a. 47% b. 38% c. 62% d. 53% c)How many zebra fish are purebreeding for the blue–purple horizontal stripes? a. 72 b. 12 c. 52 d. 5 d) If 15 years ago, 34 of 88 zebra fish had the red colour, has microevolution occurred? Why or why not?…
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