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8 May 2018

22. Which of the following statements about polygenic traits and Mendelian traits are CORRECT? i. Polygenic traits are rarely involved in adaptation. ii. Mendelian traits commonly show discontinuous variation. iii. Polygenic traits are more strongly influenced by the environment. iv. Mendelian traits are usually governed by a small number of genes. a. i, iv b. ii, iii, iv c. i, ii, iii d. ii, iv

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9 May 2018

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Related questions

The statements below are either true or false statements about type 1 diabetes.

(i) The appearance of diabetes-related autoantibodies in affected individuals occurs prior to hyperglycemia.

(ii) Type 1 diabetes accounts for between 20-25% of cases of diabetes.

(iii) The risk of developing type 1 diabetes is greater with a diabetic father than a

diabetic mother.

(iv) Type 1 diabetes is associated with other autoimmune disorders.

(v) Patients with type 1 diabetes are usually obese.

Which of the following options (a ïƒ e) is CORRECT concerning type 1 diabetes?

a) All statements are true

b) Statements (i), (iii) and (iv) are true.

c) Statements (i), (ii) and (v) are false.

d) Statements (i), (iii) and (v) are true.

e) Statements (ii), (iv) and (v) are false.

1.) Alterations in chromosome number can occur with any chromosome, but most alterations are not seen in human populations because:

A) the phenotype is homozygous recessive.

B) the phenotype is expressed in a continuous range in a given population and thus does not stand out.

C) they are lethal during fetal development.

D) most are corrected during the first mitotic event in the fertilized egg.

E) the genotype still represents a normal condition.

2.) Polygenic traits display phenotypes that

A) are most commonly reflective of the heterozygous condition.

B) usually express the dominate condition in greater than 75% of the population.

C) represent a continuous range within the population.

D) often are lethal to second generation of children.

E) are masked by a codominance condition.

3.) Which of the following is most likely involved in the determination of intelligence?

A) one gene

B) multiple genes

C) the environment

D) one gene and the environment

E) multiple genes and the environment

please help me answer theses questions correctly

1/ Which of the following are required for one-pass transmembrane proteins?

I. N-terminal signal sequence

II. Binding of SRP to the SRP receptor

III. Presence of stop-transfer sequence

IV. Presence of start-transfer sequence

a) I and III

b) I, II, and III

c) II, III, and IV

d) I, II, III, and IV

___________________

2/ Which of the following statements about the signal-recognition particle (SRP) is FALSE?

a) The SRP binds to the ER signaling sequence after the entire protein has been translated by the ribosome.

b) The SRP cycles between the ER membrane and the cytosol.

c) The SRP is required for peptides destined for either the ER membrane or ER lumen.

d) The SRP recognizes the signal sequence at the N-terminus of the newly forming polypeptide.

______________________

3) t-SNARES are _____.

a) found on the cytosolic side of the vesicle membrane.

b) necessary for recognition and transport of proteins into the nucleus.

c) usually located on the target membrane.

d) necessary for vesicle formation.

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