Questions
A female fruit fly with the recessive mutant phenotype of white eyes and miniature wings is...

A female fruit fly with the recessive mutant phenotype of white eyes and miniature wings is mated with a male possessing the wild-type phenotype of red eyes and normal wings. Among the F1s, all the females are wild-type while all the males exhibit the mutant phenotype. The F2s resulting from a test cross exhibit predominantly (63%) parental phenotypes. How do you explain these results?

In: Biology

1. Please discuss briefly the design and operation of batch heat sterilization of liquids. What factors...

1. Please discuss briefly the design and operation of batch heat sterilization of liquids. What factors affect the sterilization time of the batch system and how does a system achieve a desired level of cell destruction?

2. Is it possible to achieve absolute sterility? Explain.

3. What are the advantages of continuous over batch sterilization of liquids.

4. Explain why for the batch sterilization design is based on the number of microorganism and not on the concentration.

Cite all references.

In: Biology

Allopatric, sympatric, and parapatric speciation can occur in the same location at the same time. How?

Allopatric, sympatric, and parapatric speciation can occur in the same location at the same time. How?

In: Biology

Write the complimentary DNA sequence of the template strand below: 5’-TACGAATGCGCTATGTAAGCT3’ What is the complimentary RNA...

  1. Write the complimentary DNA sequence of the template strand below: 5’-TACGAATGCGCTATGTAAGCT3’
  2. What is the complimentary RNA sequence of the DNA strand above and what is the amino acid sequence?
  3. If you have an RNA transcript that is 100 bp, how many codons does it contain?
  4. If you take the template DNA that is shown in question 1 and you mutate the 6thnucleotide from A to G how does that impact the polypeptide sequence
  5. Is it better to have a mutation that inserts 1 nucleotide or a deletion that deletes 3 nucleotides? Explain your answer

In: Biology

People with DiGeorge Syndrome are born without a thymus. Discuss, in detail, (250 words) the repercussions...

People with DiGeorge Syndrome are born without a thymus. Discuss, in detail, (250 words) the repercussions to body defense mechanisms caused by this disease.

In: Biology

1.Glucose 6-phosphatase (G6Pase) catalyzes the dephosphorylation of glucose 6-phosphate (G6P). It bypasses the irreversible glycolytic reaction...

1.Glucose 6-phosphatase (G6Pase) catalyzes the dephosphorylation of glucose 6-phosphate (G6P). It bypasses the irreversible glycolytic reaction of glucokinase. Select the best answer that explains why G6Pase does not catalyze the reverse reaction of glucokinase.

A. G6Pase catalyzes an endergonic reaction

B. G6Pase hydrolyzes G6P

C. G6Pase requires energy from ATP to dephosphorylate G6P

D. G6Pase requires only one substrate

5. Insulin and glucagon oppositely control glucose metabolism in the liver. The former is elevated in response to a carbohydrate meal (fed state) and the latter in response to fasting. Show the overall effect of each on the pathways of glucose metabolism.

OPTIONS FOR TABLE: increase or decrease

Fed state Fasted state
glucose degradation (glycolysis)
glucose synthesis (gluconeogenesis)
glycogen degradation
glycogen synthesis

In: Biology

Know the steps in the formation of blood clots and the substances involved (platelets, fibrinogen, fibrin)...

  • Know the steps in the formation of blood clots and the substances involved (platelets, fibrinogen, fibrin)
  • Know the various types of cardiovascular disease, including atherosclerosis, heart attack, and stroke, and what causes them
  • Know what hypertensionis and what health problems it can cause

In: Biology

Compare and contrast properties of conjugation in Gram-negative bacteria and Firmicutes

Compare and contrast properties of conjugation in Gram-negative bacteria and Firmicutes

In: Biology

How do the smith waterman and BLAST algorithm differ in terms of optimality of results and...

How do the smith waterman and BLAST algorithm differ in terms of optimality of results and computational resources required to produce them?

In: Biology

write a critical reflection on antibiotics resistant

write a critical reflection on antibiotics resistant

In: Biology

Explain how you could use PCR to determine if food like spinach is infected with E.coli...

Explain how you could use PCR to determine if food like spinach is infected with E.coli or not.

In: Biology

1.) Describe the Bohr Effect and its impact on the function of hemoglobin and why it...

1.) Describe the Bohr Effect and its impact on the function of hemoglobin and why it does not impact myoglobin.

2.) Predict how different mutations or variants alter hemoglobin structure might affect its function (sickle cell, fetal hemoglobin, etc.).

In: Biology

Hurlers syndrome Perhaps you and/or your significant other is a carrier of a harmful recessive trait,...

Hurlers syndrome

  1. Perhaps you and/or your significant other is a carrier of a harmful recessive trait, such as cystic fibrosis. What would you do when considering having children? Would you hope for the best and ignore the situation, or would you see a genetic counselor or what?

Explain what type of genetic defect or disorder it is. Explain how this genetic anomaly occurs. Is it autosomal or sex linked? Is it dominant, recessive, or aneuploidy?

You should include what the effects are for individuals, what are the survival rates, is there a higher risk in certain populations, and any other interesting information.

genetics on a person. Latin (Colombian) female with a European (Hungary) male

In: Biology

Analyze the population-balancing mechanisms that are operating among the various organisms.

Analyze the population-balancing mechanisms that are operating among the various organisms.

In: Biology

For each of the following drugs give class, and mechanism of action. Amphotericin B, Cimetidine, Mifepristone,...

For each of the following drugs give class, and mechanism of action. Amphotericin B, Cimetidine, Mifepristone, Tamoxifen, Pravastatin, Theophylline, Valaciclovir, Glucophage, Salbutamol, Morphine, Pegvisomant, Montelukast, Cabergoline and Medroxyprogesterone.

In: Biology