In the 18th century, a young boy suffered from a skin condition that included thickening of the skin and the formation of loose spines that were periodically sloughed off. This "porcupine man" married and had six sons, all of whom had the same condition. He also had several daughters, all of whom were unaffected. What might you theorize about the location of the abnormal gene?

Answers

Answer 1

Answer:

The abnormal gene must have been located on the Y chromosome which is responsible for baby boys hence all his sons had the abnormal condition while none of his daughters had the condition.

Genes are the units of inheritance located on the chromosomes. Since the genes are located on the chromosomes, the chromosome involves determines what traits are transmitted.

For the porcupine man, the abnormal gene must have been located on the Y chromosome which is responsible for baby boys hence all his sons had the abnormal condition while none of his daughters had the condition.

Learn more about chromosome: brainly.com/question/296477

Answer 2

Answer:

Answer:

THE DOMINANT GENE CAME FROM THE FATHER TO ONLY THE SONS THE RECCESIVE GENE WENT TO HIS DAUGHTERS

Explanation:

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A coral reef is the product of tiny animals—invertebrates related to jellyfish. Inside the tissues of coral animals live microscopic algae that provide all of the dazzling colors associated with reefs. Sometimes, coral animals lose their algae, a condition known as bleaching because the coral suddenly looks white. In recent years, bleaching has affected more and more reef systems all over the world.What do scientists think is causing coral bleaching?A. pollution from chlorine dumpingB. overfishing around the reefC. cooler ocean temperaturesD. warmer ocean temperaturesanswerD. warmer ocean temperatures

Acceleration involves a change in __________.a.
time only
c.
velocity over time
b.
distance only
d.
none of the answers are correct

Answers

From the formula for acceleration, a = (v -u)/t

Where v = final velocity, u = initial velocity, t = time

(v -u) represents Change in velocity.

Acceleration is hence Change in velocity overt time. Option C.

Today in class, a student asked whether the positive charge of the presequence of proteins being imported into the mitochondria was inhibitory for entry into the intermembrane space because of the positive charge present in this compartment of the mitochondria. How do proteins get past this? Wouldn't the net positive charge be inhibitory to import through the TOM complex?

Answers

Answer:

Mitochondrial proteins enter the organelle through channels formed by membrane proteins present in its inner and outer membranes.

Explanation:

All the biological membranes have lipid bilayer with the non-polar core that does not allow entry of charged and large substances. Mitochondrial proteins are synthesized in the cytosol and the unfolded proteins bind to the chaperons that deliver them to the receptors present in the outer mitochondrial membrane.

The receptor moves the protein to the membrane channels formed by integral membrane proteins of inner and outer mitochondrial membranes. The proteins enter the intermembrane space and are targeted to the inner membrane through channels while chaperons are left outside only.

Match the material to the category of biomass to which it belongs.

Answers

Here you go! Hope this helps

Answer:

here

Explanation:

industrial residue- cloth fabric

agricultural residue- husk

kitchen waste- egg shells

virgin wood- bark

Which of the following statements about DNA isolation from E. coli is not correct?a. chemical extraction using phenol removes proteins from the DNA
b. RNA is removed from the sample by RNase treatment
c. detergent is used to break apart plant cells to extract DNA
d. lysozyme digest peptidoglycan in the bacterial cell wall
e. centrifugation separates cellular components based on size

Answers

Answer:

The correct answer is c. detergent is used to break apart plant cells to extract DNA.

Explanation:

Here we are talking about DNA isolation in E.coli and detergent is used to break apart the bacterial cell membrane by destabilizing the cell membrane. Detergent disintegrates the proteins present in the cell membrane which causes the rupture of membrane releasing the cell extract outside the cell.

Detergent is not able to break plant cell because it is made up of cellulose and require blending or mashing. Detergent can only be used to disintegrate the cell membrane because only cell membranes contain lipids and proteins.

Hence, the correct answer is c. detergent is used to break apart plant cells to extract DNA.

J and K want to have a baby, but they are a little concerned because they both have the sickle cell trait. They want to know what the possibility is that their child may actually have the disease. 1. Develop a Punnett square depicting the possibility that their offspring will have the trait and/or the disease.

2.How would the nurse interpret this Punnett square?

Answers

Answer:

Sickle cell anemia is an autosomal recessive disorder. For the trait to occur, both of the alleles in an individual should be recessive. Parents who both have sickle cell anemia will have 100% results for their children to carry the disease. The results can be depicted from the following punnet square:

s s

s ss ss

The results will be interpreted by the nurse as having 100% chance for the parents to have the child born with sickle cell as both the parents carry the disease which is autosomal recessive.

Day-to-day choices can help reduce the risk of heart disease. One of the major risk factors for development of heart disease is elevated LDL, which can be affected by the types and amounts of dietary fat consumed as well as other dietary factors. Read the statements below and select all of the correct statements regarding how various dietary fats affect LDL cholesterol levels. Select all that apply. a. Typically, the higher your consumption of unsaturated fats, the higher the LDL cholesterol levels in your blood. b. Trans fats are worse for heart health than saturated fats because they raise LDL cholesterol and lower HDL cholesterol. c. Increasing intake of plant foods may be one of the easiest ways to decrease LDL cholesterol. d. Typically, the higher your consumption of saturated fats, the higher the LDL cholesterol levels in your blood. e. Dietary cholesterol does not affect blood cholesterol levels.

Answers

Answer:

b. Trans fats are worse for heart health than saturated fats because they raise LDL cholesterol and lower HDL cholesterol.

c. Increasing intake of plant foods may be one of the easiest ways to decrease LDL cholesterol.

d. Typically, the higher your consumption of saturated fats, the higher the LDL cholesterol levels in your blood.

Explanation:

Generally, the consumption of saturated fat increases the amount of LDL cholesterol in the blood system while the consumption of unsaturated fat can reduce the amount of LDL cholesterol in the blood system. In addition, the consumption of plant food can reduce the amount of LDL in the blood system. Trans fats are more harmful to one's heart than saturated fat because they can increase the amount of cholesterol in the blood system.

Answer:b,c,d

Explanation:a. Unsaturated fats are mostly beneficial to health, e.g- omega 3 fatty acids, and are not known causes of LDL increase.

b. Trans fats are known to increase LDL cholesterol while also decreasing HDL cholesterol levels. We do not find this in saturated fats which are known to only increase LDL cholesterol.

c. Plants possess "soluble fiber" that drastically help to reduce cholesterol levels. They are known to be very low in saturated fats, and also free of cholesterol.

d. Saturated fats are common causes of elevated LDL in blood stream.

e. Dietary cholesterol as opposed to serum cholesterol are fats found in our diets(food) that may contain high levels of cholesterol that increase LDL levels in blood.

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