Q: hy transcription initiation requires the assembly of transcription regulatory proteins on DNA sites ...
A: Transcription The process of converting a piece of DNA into RNA . Messenger RNA is created when se...
Q: Explain the features of the Initiator (Inr) elements, BREs, DPEs,and MTEs of focused promoters.
A: The initiator element (Inr), also known as the initiator motif. In a core promoter that functions s...
Q: Based on the class data from Experiment I, for each of the three populations, describe the effect of...
A: Key points Genetic drift is a mechanism of evolution in which allele frequencies of a population...
Q: In Figure 5-5,a. Why do A− and B− cells, by themselves, not formcolonies on the plating medium?b. Wh...
A: A gene is the essential physical and functional unit of heredity. They are comprised of DNA (deoxyri...
Q: Which of the following biogeochemical cycles include decomposition? can select more than one answer...
A: Biogeochemical cycles are the chemical cycles that maintain the availability of nutrients in the env...
Q: Two species of frog live near each other. Species A is bright red and poisonous. Species B is also b...
A: The correct option is 3 i.e. Aposematic coloration.
Q: Which of the following is a correct hormone-action pairing? oxytocin - stimulation of uterine contra...
A: ANSWER) Oxytocin- Oxytocin hormone is responsible for proper functioning of the reproductive systems...
Q: Which of the Basal Ganglia loops is associated with switching tasks and prioritizing movements? Affe...
A: Introduction : Basal ganglia is responsible for motor control. It is located beneath the cerebral...
Q: what amino acid is found at the resiue position 58 of 3GRS glucathione reducatse and why is this poi...
A: Glutathione reductase is in charge of maintaining the supply of reduced glutathione, which is one of...
Q: Which terrestrial biome is characterized by having very cold winters, short summers, and only small ...
A: Biogeography is the science that documents and attempts to explain the patterns of distribution of p...
Q: What is pollination? What are the main forms of pollination?
A: Pollination is the process of extracting pollen grains from the male component of a flower, the anth...
Q: 1. One type of vertebrate cell that is thought to lack integrins is the erythrocyte (red blood cell)...
A: Integrins are large family of principal transmembrane receptors that facilitates the binding of cell...
Q: What are the main cells that compose poriferans?
A: International In this question we will discuss about the main cells that compose poriferans.
Q: Joshua Tree National Park hosts several species, including the cactus wren, creosote bush, kangaroo ...
A: Ecological levels of organizations are as follows :-
Q: What chemical substances compose the plasma membrane?
A: Plasma membrane This is involved in the protection of intracellular components from the external env...
Q: Identify the type of muscle found in the picture (choices: smooth muscle, skeletal muscle, or cardia...
A: Smooth muscle: it is usually unbranched, non-striated, and single nucleated muscle fibers. Skeletal...
Q: Which of the following is a risk factor for the development of cancer, but not also for diabetes and...
A: Risk factors for development of cancer : Tobacco Exposure to radiation Specific Chemicals Older age...
Q: Voles and lemming are found throughout the Arctic. Which of the following statements is correct rega...
A: Some of the basic features of both mammals are: Voles and lemmings do not undergo hibernation in an...
Q: How do plants control the opening and the closing of stomata?
A: Introduction: Stomata is present on the leaves of plants. They are tiny pores that help the plant to...
Q: what can we do to help reduce the amount of pollutants such as CO, SO2, NO2, HCl, NO3 in the atmosph...
A: The environmental change includes elevation normal temperatures as well as outrageous climate occasi...
Q: DNA strand below: 3’ T A C A T G C C G A A T G C C 5’ Discuss how will replication happen by mentio...
A: Introduction: DNA stands for 'deoxyribonucleic acid' and it is the hereditary material in humans and...
Q: Question 2 Why do small Arctic mammals enter hibernation whereas larger mammals stay active during t...
A: Hibernation is defined as the process in which the animal decreases it's metabolic rate, energy cons...
Q: If births and immigration are greater than death and emigration how will a population change? Group ...
A: A Population has different attributes which helps to compare two different populations.
Q: If a diploid a 40 pair of chromosomes, what is the chromosome number by the end telophase?
A: Introduction: Cell cycle is an ordered sequence of events occurring in a cell. Cell cycle results in...
Q: Why do plants need to exchange gases with the environment?
A: Introduction In this question we will discuss about why plants need to exchange gases with environm...
Q: Define about posttranslational modifications within the proteome ?
A: A complete set of proteins expressed by an organism is called a proteome. In other words, assortment...
Q: In dogs, a dominant gene (1) determines white coat, and a recessive gene (i) gives colored coat. In ...
A: The phenotypic ratio would be 12:3:1. The genetic interaction is recessive epistasis.
Q: What are the main cells that compose poriferans?
A: Phylum porifera contains unique animals called sponges. They are termed as sessile metazoans as they...
Q: What is a greater cause for non-threatened species, fires or pollution?
A: Ecological succession is a process in which the habitat and species change after a disaster and grad...
Q: What are the types of plant geotropisms? Why do the stem and the roots present opposite geotropisms?
A: Introduction: Gravitropism ,also known as geotropism, is a coordinated process of differential growt...
Q: what are the prevention,control and treatment of inflammatory diseases(Gout)?
A: Introduction: Gout is a metabolic disease in which crystals of uric acid gets deposited in joints, t...
Q: With respect to gene transfer and the integration of thetransferred gene into the recipient genome, ...
A: Part A. Hfr cells are the key cells that are involved in the process of conjugation transfer host ge...
Q: What is an evolutionary tree? Is there a precise evolutionary tree that explains the emergence and o...
A: Introduction In this question we will discuss about an evolutionary tree which is given in below st...
Q: 5. discuss different components and types of epigenetic gene regulation 6. define mutation and descr...
A: Mutation occurs when the base pair sequence of our DNA changes as a result of numerous environmental...
Q: true or false Primary cells are isolated directly from tissues and have not been modified ex vivo u...
A: Cell culture is the process of growing cells in-vitro or outside the body using suitable media and g...
Q: Describe the role of pH in regulating the interaction between mannose 6-phosphate and the M6P recept...
A: The term pH stands for hydrogen potential. It is been stated that they are defined to decide whether...
Q: Below is a figure representing DNA replication. One end of the DNA is labeled; given this informatio...
A: * DNA replication is a process in which double stranded DNA molecule is copied and hence produce tw...
Q: A healthy young couple are both carriers of cystie fibrosis, an autosomal recessive condition What i...
A: Cystic fibrosis is basically hereditary disorder in which lungs and digestive system get more infect...
Q: A farmer wants to keep geese out of their field. This farmer builds a fake Coyote to scare away the ...
A: Correct option is Associative learning (option 4).
Q: Brown fat metabolism generates about 10x more heat than white fat metabolism True False
A: This is true that brown fat metabolism generate about 10 x more heat then white fat metabolism conta...
Q: Insulin is a protein secreted by the beta cells of the pancreas into the blood. Which of the followi...
A: Insulin is a hormone which is released by Beta cells of pancreas. And in the given options,option 1 ...
Q: The photomicrograph below shows mitotically dividing cells from whitefish (Coregonus lavaretus). a. ...
A: Cell division is process of making new body cells.
Q: What are features of eukaryotes ?
A: Cells are the fundamental unit of life since no living organism can exist without them. A cell is a ...
Q: 1. How would you describe the basal body temperature of a female in the follicular phase as compared...
A: Introduction: The menstrual cycle is a reproductive cycle which takes place in the females of the gr...
Q: 6. Which statement is incorrect for the pathogenic= spirochetes? A Stain well with Gram stain reagen...
A: For the first time in history, spirochetes contain endocellular flagella (axial fibrils, also known ...
Q: During a routine check-up, a woman is informed by her doctor that she has developed a skin tumor. Al...
A: *Benign tumors stay in their location without invading other sites of the body. *They do not spread ...
Q: DNA strand below: 3’ T A C A T G C C G A A T G C C 5’ Discuss how will replication happen by mentio...
A: The central dogma of molecular biology involves replication, transcription and translation. Replicat...
Q: Explain how captive breeding can help with endangered species recovery, and give an example. Now exp...
A: Endangered species are those that have been subjected to threats and are on the verge of extinction....
Q: Based on the class data from Experiment I, generally speaking, how does population size affect genet...
A: Genetic drift is the trade in the frequency of an present gene variation in a population because of ...
Q: Explain why mitosis is normal in cells containing both horse and donkey chromosomes, but the mixed s...
A: Mule is the offspring of a male donkey and a female horse. Horses and donkeys are different species,...
Step by step
Solved in 2 steps
- 下午7:08 1月27日周四 98% Yuki 1.23 AP环科课后作业和课堂笔记.pdf •.. 34. Which of the following statements about genetic diversity is true? (A) Genetic uniformity of a crop increases the crop’s overall resistance to pests and disease. (B) Genetic resistance to pests and diseases can be increased by crossing a crop plant with ancestral varieties. (C) Genetic engineering technology is used to increase genetic diversity by creating new species with synthetic genes. (D) Genetic diversity within populations of common crop species such as corn is typically high. (E) Genetic diversity is usually high in endangered species.Part A Why is mimicry evolutionarily advantageous (helpful/beneficial)? U =- E E XA PLAYOne of the effects of climate change on ecological communities is the disruptionof seasonal timing or phenology. A team of biologists is trying to determine the potential forrapid evolutionary responses of plants to changing seasonal conditions. They do alaboratory selection experiment on flowering time in an annual plant to test for the presence ofadditive genetic variance for this trait. They measure the time between germination andflowering for 400 plants under controlled laboratory conditions and then use 25% with theshortest flowering times to find a second generation in the lab (with pollination based onrandom number sampling). The mean flowering time for the overall parental population was 80days. The mean for the selected 25% of individuals was 60 days. In the offspring generation, themean flowering time was 70 days. 6a. What is the narrow-sense heritability for flowering time for these plants under laboratoryconditions? 6b. If you performed another round of selection on the…
- Roughly 30% of harvested cantaloupesare wasted because they become overripebefore reaching consumers. Agricultural scientistshave used genetic engineering to insert an applegene into the cantaloupe genome to produce atransgenic (GM) cantaloupe that ripens more slowlyafter harvesting. Is this approach less desirablethan the marker-assisted breeding describedabove? Why or why not?CH 1-4 X ← → C Maya X Credibi X app.wizer.me/learn/00E0A8 wizer.TIE a Maya S x BW x BW To-do X Assign x b M Dashb X BB x BW Figura X Figurat X A chicken breeder has chickens that are white, black, or speckled. Speckled chickens have both black and white feathers. The allele for white feathers is (W). The allele for black feathers is (B). Determine the genotypes of the rooster and hen that would breed the greatest percentage of speckled chickens. BW x WW Dashboard Incomp X Interac X STILCI GIESS LUUC BB x WW + with white (W). The heterozygous phenotype is brown and white V < ☆ GO> NEXT A BOOKMARK Question 23/28 According to the probability of the pea plant offspring in chart 2, what percentage of the offspring will be yellow in color? Use the diagrams below to answer the questions that follow. 23 Pea Plants Chart 1 A 5% Punnett Square B) 19% с) 30% Aa Aa D 25% Aa A a E) 75% Chart 2 AaBb x AaBb AB Ab aB ab Key AB AABB AABB Ab AABB AABB AaBb AA - Green BB - Smooth AAbb AaBb Aabb AABB AaBb aa - Yellow aB AaBb aaBB aaBb bb - Rough ab Aabb aaBb aabb
- A marijuana grower in Ft Jones, CA would like to increase the average amount of THC in his crop. He has estimated that the concentration in his current crop is 19 mg/g of product. The grower selects the top 7 male and 7 female plants in his current population and allows them to intercross. After pollination, the grower estimates that the average THC concentration in these plants is a bomber 30 mg/g THC! He plants the F1 seeds and after the next growing season finds that the average THC concentration is 26 mg/g THC in these plants. Unfortunately, the grower started listening to his old Deep Purple 8 tracks and can't find the notebook in which he recorded this information. 1. Can you please tell the grower what the selection differential for THC production was that produced this crop? 2.Can you please remind the grower what is the response to selection for THC production was in this population? 3 .Can you please tell the grower what the narrow-sense heritability is for THC production in…The wing polymorphic oricket, Grylus deaensis, has some individuals who are capable of long flights fong legs, trong fight muscles) and olhers who are not (short legs, weak tight muscles) Fight-capable orioeta have delayed reproduction, with lower ovarian function in females and less courtahip song production in males A biologist genotypes a population of orickats ving in an urtan feld in Dalas at the wing gene, which has two aleles, W and w Crickets with at least one oopy of the Watele are fight capable, while ww homarygoles are fight-incapable. She finds 12 crickets with genotype WW. 35 with genotype Ww and 63 with genotype ww. Keep these numbers for the next two questiona What is the frequency of the W allele?Write the definition of the following terms: 1. Semelparous life history 2. Iterous species 3. Senescence 4. Antagonistic pleiotropy 5. Carrying capacity
- From an agricultural point of view, discuss the advantages and disadvantagesof selective breeding. It is common for plant breeders to take two different, highly inbred strains, which are the product of many generations of selective breeding, and cross them to make hybrids. How does this approach overcome some of the disadvantages of selective breeding?Selective breeding artificial traits crop species hyprid Domestic diverse population 1. occurs when humans take control of the breeding process. 2. The favorable to be passed on are chosen by the breeder to create a new or improved variety. 3. Farmers have bred like corn, to produce more food in a smaller area. 4. These plants result by crossing parent plants for their desired traits. 5. animals, like dog breeds, have also been bred to be incredibly compared to the diversity of their ancestors. 6. This selecting of traits is also known as selection. 7. Similar to natural selection, the of a species changes over time, and some traits become more common.Bruce Ames and his colleagues have pointed out that although detailed toxicological analysis has been conducted on synthetic chemicals, almost no information is available about the mutagenic or carcinogenic effects of the toxins produced by plants as a natural defense against fungi, insects, and animal predators. Tens of thousands of such compounds have been discovered, and he estimates that in the United States adults eat about 1.5 g of these compounds each daylevels that are approximately 10,000 times higher than those of the synthetic pesticides present in the diet. For example, cabbage contains 49 natural pesticides and metabolites, and only a few of these have been tested for their carcinogenic and mutagenic effects. a. With the introduction of new foods into the U.S. diet over the last 200 years (mangoes, kiwi fruit, tomatoes, and so forth), has there been enough time for humans to develop resistance to the mutagenic effects of the toxins present in those foods? b. The natural pesticides present in plants constitute more than 99% of the toxins we eat. Should diet planning, especially for vegetarians, take into account the doses of toxins present in the diet?