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TLS Online TPP Program

#Question id: 1003

The glucose-alanine cycle provides ________.

#Unit 1. Structure and Function of Biomolecules

  1. an alternate site for production of urea in the kidney

  2. transport of important enzymes for gluconeogenesis

  3. an indirect means for muscle to eliminate nitrogen and replenish its energy supply

  4. a cycle for the direct synthesis of carbohydrates in muscle

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TLS Online TPP Program

#Question id: 19119

#Unit 8. Inheritance Biology

You are conducting genetic linkage studies of an autosomal recessive disease whose chromosomal location has not been firmly established. You are focused on two SSR markers that may be linked to each other and to the disease. Here are two families in which some individuals are affected:
                     
Calculate LOD scores for linkage at θ= 0.02 between SSR42 and SSR43 in Family 2.
TLS Online TPP Program

#Question id: 19120

#Unit 8. Inheritance Biology

Trisomy 18 is one of the most common trisomies observed in human populations. You prepare DNA samples from two unrelated infants, both with trisomy 18, and from their parents. You then type the infants and their parents for four SSRs distributed along chromosome 18:
 

                                      
In which parent did nondisjunction occur in Family 1?
TLS Online TPP Program

#Question id: 19121

#Unit 8. Inheritance Biology

Trisomy 18 is one of the most common trisomies observed in human populations. You prepare DNA samples from two unrelated infants, both with trisomy 18, and from their parents. You then type the infants and their parents for four SSRs distributed along chromosome 18:
 

                                              
In which parent did nondisjunction occur in Family 2?
TLS Online TPP Program

#Question id: 19122

#Unit 8. Inheritance Biology

Trisomy 18 is one of the most common trisomies observed in human populations. You prepare DNA samples from two unrelated infants, both with trisomy 18, and from their parents. You then type the infants and their parents for four SSRs distributed along chromosome 18:
     
             
                                         
In which division of meiosis did nondisjunction occur in Family 2?
TLS Online TPP Program

#Question id: 24564

#Unit 8. Inheritance Biology

A one type of nondisjunction leads to regions of tissue with different chromosome constitutions, a condition known as
TLS Online TPP Program

#Question id: 24565

#Unit 8. Inheritance Biology

A particular trait that are determined by autosomal genes and are inherited according to Mendel’s principles, this particular trait has higher penetrance in one of the sexes is known as