That cancer cells often lack the gap junctions common to non-malignant cells of the same type is evidence that

TLS Online TPP Program

#Question id: 15832

#Unit 8. Inheritance Biology

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.        

 Assume that the trait is autosomal dominant with 80% penetrance in heterozygotes and 100% penetrance in homozygotes. What is the probability that Ben and Jane’s first child will be affected? 

TLS Online TPP Program

#Question id: 525

#Unit 1. Molecules and their Interaction Relevant to Biology

Under what situation might lactic acidosis occur?

TLS Online TPP Program

#Question id: 12128

#Unit 10. Ecological Principles

There are more species in tropical areas than in places farther from the equator. This is probably a result of

TLS Online TPP Program

#Question id: 4787

#Unit 8. Inheritance Biology

In humans, PKU (phenylketonuria) is a recessive disease caused by enzyme inefficiency at step A in the following simplified reaction sequence, and AKU (alkaptonuria) is a recessive disease due to enzyme inefficiency in one of the steps summarized as step B here:A person with PKU and homozygous for normal of other character was married a person with AKU and homozygous for normal of other character. What is expected phenotypes in their children?

TLS Online TPP Program

#Question id: 11017

#Unit 7. System Physiology – Animal

Which of the following is most likely at the “J point” in an EKG of a patient with a damaged cardiac muscle?