Description of people with spherocytosi

Assignment Help Biology
Reference no: EM13671918

Spherocytosis is an inherited blood disease in which the erythrocytes (red blood cells) are spherical instead of biconcave. This condition is inherited in a dominant fashion, with SPH (the mutant allele) dominant to SPH . In people with spherocytosis, the spleen "reads" the spherical red blood cells as defective and removes them from the bloodstream, leading to anemia. The spleen in different people removes the spherical erythrocytes with different efficiencies. Some people with spherical erythrocytes suffer severe anemia and some mild anemia, yet others have spleens that function so poorly there are no symptoms of anemia at all. When 2400 people with the genotype SPH SPH were examined, it was found that 2250 had anemia of varying severity, but 150 had no symptoms.
a) Does this description of people with spherocytosis represent incomplete penetrance, variable expressivity, or both? Explain your answer.
b) Can you derive any values from the numerical data to measure penetrance or expressivity?

Reference no: EM13671918

Questions Cloud

What makes identical twins different within there dna : What makes Identical Twins Different (Genetically) within there DNA? 200 to 250 words
Explain burette for measuring reaction volumes : Other than precision and accuracy, Define what are two advantages of using a burette for measuring reaction volumes as opposed to a graduated cylinder
Explain how much boiling water would need to increase : See that your water heater broke however you wanted to take a bath. You fill your bathtub with about 25kg of room temperature water (about 25 degrees C). You figure you can boil water on your stove to elevate the bath water temperature. Explain ho..
What is the difference between direct and indirect staining : What is the difference between direct and indirect staining?
Description of people with spherocytosi : a) Does this description of people with spherocytosis represent incomplete penetrance
How many honey-colored bodies : A) Animals with the trident marking mate among themselves. Of 300 progeny, how many would be expected to have a trident, how many ebony bodies, and how many honey-colored bodies?
Explain what volume of hydrogen to produce : a. Explain what volume of hydrogen at 15.00atm and 350 degrees C must be supplied to produce 1.0 tone (1t=10^3 kg) of NH3. b. Explain what volume of hydrogen is needed in part as if it is supplied at 376atm and 250 degrees C
Explain how comb morphology is inherited : Explain how comb morphology is inherited.
Write a balanced chemical equation for the change : If ammonia gas as well as 0.365 g of hydrogen chloride gas react to give 0.535 g of solid ammonium chloride, explain what is the mass of ammonia that reacted as well as how would you write a balanced chemical equation for this change

Reviews

Write a Review

Biology Questions & Answers

  Which is true about the symmetry of animal body plans

In ecology, body size is an important variable. Which of the following implications of body size is truANIMALe?

  The somatic nuclei of individuals

Determine how many chromosomes will be present in the somatic nuclei of individuals

  What were the contributions of nestorian christians

What were the contributions of Nestorian Christians, Muslims, and Jews to Medieval Science?

  Which substrate will the acyl enzyme be formedmore rapidly

You are studying the cleavage of two substrates by chymotrypsin,an ester and an amide. Except for the scissile bond, the substratesare identical. With which substrate will the acyl enzyme be formedmore rapidly? Why?

  What are the functions of each of these organelles

Name the two organelles (one in animal cells and one in plant cells) that have their own DNA that are NOT located in the nucleus.

  What molecular motor facilitates the movement

If the epidermis is wounded (cut), epithelial cells must migrate out on the ECM of the dermis to cover the wounded area. Epithelial cells migrate through the use of transient focal adhesions.

  The following statement is true about eukaryotic insulators

The following statement(s) is true about eukaryotic insulators.

  Determine net pressure driving glomerular filtration

Suppose if the average hydrostatic pressure in glomerular capillaries is 55 mmHg, the hydrostatic pressure in Bowman's space is fifteen mmHg, the average colloid osmotic pressure in the glomerular.

  What risks does this infection pose to the woman

A 22-year-old Honduran woman presents to an urgent care center complaining of a rash and joint pains in the wrists and knees for 2 days. Her rash was preceded by 3 days with a fever, malaise, headache, mild conjunctivitis, mild cough, and lymphade..

  Why rnase added to pcr

Explain why is RNAse added to PCR? Prevent RNA from annealing to the template strand. But what else is it used for

  Functions of the cerebrum-cerebral cortex is highly folded

The cerebral cortex is highly folded. Why might this be an advantage for the functions of the cerebrum?

  What type of channel is in a presynaptic membrane

what type of channel is in a presynaptic membrane in a presynaptic cell? A. ligand gated B. voltage gated Na+, K+ C. voltage gated Na+, K+, Ca2+.

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd