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?

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#Question id: 24656

#Unit 2. Cellular Organization

What is the “signature sequence” that is highly conserved in all K+ channels?

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#Question id: 28944

#Unit 7. System Physiology – Animal

Which of the following Prediction is correct about adrenocorticotropic hormone (ACTH) ? 

a) CRH Stimulates secretion of ACTH by corticotropes

b) it controls the secretion of cortisol by the activation of adenylyl cyclase via Gαq

c) it controls the secretion of cortisol by the activation of adenylyl cyclase via Gαs

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#Question id: 4790

#Unit 8. Inheritance Biology

The F2 genotypes of two independently assorting gene A and B with complete dominance result in a 9 : 3 : 3 : 1 ratio of phenotypes if there is no interaction between the genes. Following modify phenotypic ratio of 9:3:3:1 given as following table (p - phenotype) Which of the following correct matching of gene interaction and their deviated phenotype ratio?

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#Question id: 8945

#Unit 9. Diversity of Life Forms

Which of these is the basal group of the Eumetazoa?

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#Question id: 26963

#Unit 10. Ecological Principles

If R is significantly equals to 1, then the population is represented quadrate is_____