Can colonies on HE agar be both pink-orange/salmon in color and have black centers? explain your...
Can colonies on HE agar be both pink-orange/salmon in color and have black centers? explain your answer.
Homework Answers
Hektoen enteric agar known as differential agar and also a selective agar normally culture in Shigella and organisms salmonella. This media contains some indicator like hydrogen sulfide and lactose. Organisms salmonella can produce hydrogen sulfide and in the presence of hydrogen sulfide ,the media containing thiosulfate produce black precipitate.Hydrogen sulfide is not produce by sigella. So sigella colonies are appeared in pink orange colony.
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Can colonies on HE agar be both pink-orange/salmon in color and
have black centers? explain your...
In maize, pure-breeding lines are obtained that have red, pink or orange kernels when exposed to...
In maize, pure-breeding lines are obtained that have red, pink or orange kernels when exposed to sunlight. Normal kernels remain yellow in sunlight. The table below gives the results of three crosses between the lines. Cross Parent phenotype F1 Phenotypes F2 Phenotypes 1 red x pink ALL RED 66 red, 20 pink 2 orange x red ALL RED 988 red, 314 orange 3 orange x pink ALL ORANGE 1300 orange,429 pink A. How many genes are involved in color determination?...
In cats with tortoiseshell coat color, the fur is white with patchy black and orange spots....
In cats with tortoiseshell coat color, the fur is white with patchy black and orange spots. In cats, the tortoiseshell gene is on the X chromosome, and the tortoiseshell phenotype requires the presence of 2 different alleles at this locus: one for orange fur (o) and one for black fur (b). What phenomenon best explains why female cats can inherit tortoiseshell coat color? In females, the alleles for coat color are pleiotropic, resulting in patches of orange and black coat...
Henry Ford proclaimed “You can have any color you want, as long as it is black”....
Henry Ford proclaimed “You can have any color you want, as long as it is black”. Which of the following best reflects his motivation for this position? Henry Ford proclaimed “You can have any color you want, as long as it is black”. Which of the following best reflects his motivation for this position? He believed that customers didn’t actually like other colors, so why go through the hassle of making different color cars?radio button unchecked1 of 5 With more...
coat color is due to a dominant allele (W), black coat color to its recessive allele...
coat color is due to a dominant allele (W), black coat color to its recessive allele unnett squares for each of the following crosses and answer the questions. 2. In sheep, white tw). Construct P d frequency fo a. A black sheep crossed to a black sheep. List the genotypes, phenotypes, an each of the offspring b. A white sheep, the product of a black x white cross, is crossed with a black sheep. List the genotypes, phenotypes, and frequency...
Scenario 1: A bacterium isolated from a wound sample gave the following results: MacConkey agar =...
Scenario 1: A bacterium isolated from a wound sample gave the following results: MacConkey agar = no growth Mannitol salt agar - good growth, color of medium unchanged Based on these results, which of the following statements is/are true? (Choose ALL true statements.) A. The organism is most likely Gram positive. B. The organism is most likely Gram negative. C. The organism is most likely a bacillus. D. The organism is most likely a coccus. Which of the following most...
e) Can you identify any wildtype (nonmutant) colonies in the figures? Explain your answer. f) Can...
e) Can you identify any wildtype (nonmutant) colonies in the figures? Explain your answer. f) Can you identify any standard (non-conditional) mutants in the figures? Explain your answer. g) Can you identify any conditional mutants in the figures? Explain your answer. 23°C mutant colony in which cells proliferate at the cooler, permissive temperature but fail to proliferate at the warmer, nonpermissive temperature 23°C colonies replicated onto two identical plates and incubated at two different temperatures mutagenized cells plated out in...
An individual can be classified by gender as male, female, by hair color as black, blonde,...
An individual can be classified by gender as male, female, by hair color as black, blonde, brown, red, unknown, and by eye color as black, brown, green, hazel, unknown. a) How many different classifications are possible (for example, male, with blonde hair, and green eyes)? There are different classifications. b) Construct a tree diagram to determine the sample space. The tree for gender has branches. From each branch of the tree for gender, the tree for hair color has branches...
2. Explain the effect upon the equilibrium, if any, for each of the substances added (sodium...
2. Explain the effect upon the equilibrium, if any, for each of the substances added (sodium acetate, sodium hydroxide and hydrochloric acid). If you believe that the addition effects the position of the equilibrium, indicate whether the equilibrium shifts toward reactants or products and why. Adding sodium acetate: Adding sodium hydroxide: Adding hydrochloric acid: Data: Observation Test solution Initial Acetic acid + methyl orange А Acetic Acid + methyl orange + first NaC,H,O2 Acetic Acid + methyl orange + second...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have...
1.My wife has black color eyes, the dominant trait. All of her family and relatives have dark eyes too. I have light color eyes (blue), the recessive trait. We are hoping for a blue-eyed baby. What is the probability we will have a baby with blue eyes? What is the probability we will have a baby with dark eyes? 2. In humans, tongue rolling is a dominant trait, those with the recessive condition cannot roll their tongues. Bob can roll...
You have obtained samples from a patient who is in the ICU at your hospital. You...
You have obtained samples from a patient who is in the ICU at your hospital. You perform the Gram-Stain and IMVIC tests, and see the following results: Gram-Stain Upon examination under the microscope you view pink colored rods. IMVIC Indole: After the addition of Kovac's Reagent, you see no color change at the top of the media. Methyl Red: After the addition of methyl red, your broth immediately turns a red color. Voges Proskauer: After the addition of VP reagents...
coat color is due to a dominant allele (W), black coat color to its recessive allele unnett squares for each of the following crosses and answer the questions. 2. In sheep, white tw). Construct P d frequency fo a. A black sheep crossed to a black sheep. List the genotypes, phenotypes, an each of the offspring b. A white sheep, the product of a black x white cross, is crossed with a black sheep. List the genotypes, phenotypes, and frequency...
Scenario 1: A bacterium isolated from a wound sample gave the following results: MacConkey agar = no growth Mannitol salt agar - good growth, color of medium unchanged Based on these results, which of the following statements is/are true? (Choose ALL true statements.) A. The organism is most likely Gram positive. B. The organism is most likely Gram negative. C. The organism is most likely a bacillus. D. The organism is most likely a coccus. Which of the following most...
e) Can you identify any wildtype (nonmutant) colonies in the figures? Explain your answer. f) Can you identify any standard (non-conditional) mutants in the figures? Explain your answer. g) Can you identify any conditional mutants in the figures? Explain your answer. 23°C mutant colony in which cells proliferate at the cooler, permissive temperature but fail to proliferate at the warmer, nonpermissive temperature 23°C colonies replicated onto two identical plates and incubated at two different temperatures mutagenized cells plated out in...
An individual can be classified by gender as male, female, by hair color as black, blonde, brown, red, unknown, and by eye color as black, brown, green, hazel, unknown. a) How many different classifications are possible (for example, male, with blonde hair, and green eyes)? There are different classifications. b) Construct a tree diagram to determine the sample space. The tree for gender has branches. From each branch of the tree for gender, the tree for hair color has branches...
2. Explain the effect upon the equilibrium, if any, for each of the substances added (sodium acetate, sodium hydroxide and hydrochloric acid). If you believe that the addition effects the position of the equilibrium, indicate whether the equilibrium shifts toward reactants or products and why. Adding sodium acetate: Adding sodium hydroxide: Adding hydrochloric acid: Data: Observation Test solution Initial Acetic acid + methyl orange А Acetic Acid + methyl orange + first NaC,H,O2 Acetic Acid + methyl orange + second...
You have obtained samples from a patient who is in the ICU at your hospital. You perform the Gram-Stain and IMVIC tests, and see the following results: Gram-Stain Upon examination under the microscope you view pink colored rods. IMVIC Indole: After the addition of Kovac's Reagent, you see no color change at the top of the media. Methyl Red: After the addition of methyl red, your broth immediately turns a red color. Voges Proskauer: After the addition of VP reagents...
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