Practice Questions

TLS Online TPP Program

#Question id: 27549

Which of the following is correct ionization series for Lys & Arg is

#Unit 1. Molecules and their Interaction Relevant to Biology

1------pK1-----pKr--------pKr------14
1------pK1-----pK2--------pKr------14
1------pK2-----pKr--------pK1------14
1------pKr-----pKr--------pK1------14

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TLS Online TPP Program

#Question id: 88

#Unit 1. Molecules and their Interaction Relevant to Biology

Anomers can be interconverted ________.

TLS Online TPP Program

#Question id: 15149

#Unit 8. Inheritance Biology

In this problem we will explore some of the many ways that mutations in two different genes can interact to produce different Mendelian ratios. Consider a hypothetical insect species that has red eyes. Imagine mutations in two different unlinked genes that can, in certain combinations, block the formation of red eye pigment yielding mutants with white eyes. In principle, there are two different possible arrangements for two biochemical steps responsible for the formation of red eye pigment. The two genes might act in series such that a mutation in either gene would block the formation of red pigment. Alternatively, the two genes could act in parallel such that mutations in both genes would be required to block the formation of red pigment.

Further complexity arises from the possibility that mutations in either gene that lead to a block in enzymatic activity could be either dominant or recessive. If the crosses is made between a wild type insect with red eyes and a true breeding white eyed strain with mutations in both genes. Such considerations yield the Pathways in series with recessive mutations in both genes, what will be the phenotype in F1 progeny?

TLS Online TPP Program

#Question id: 22948

#Unit 5. Developmental Biology

In the floral meristem, the FT-FD complex → SOC1 and AP1 → ____?___ gene expression

TLS Online TPP Program

#Question id: 5342

#Unit 8. Inheritance Biology

Women having normal color vision, normal pigmentation and A blood group whose father is color blindness, albinism and O blood group will marry with men having colorblind, albinism and O blood group. What is probability of their first child will colorblindness son, normal pigmentation and O blood group?

TLS Online TPP Program

#Question id: 10373

#Unit 6. System Physiology – Plant

The nodulation (nod) genes are classified as common nod genes or host specific nod genes. Some statements related to such classification are given below;

a) nod A is a common nod gene and nod Q is a host specific gene

b) nod B is a common nod gene and nod C is a host specific gene

c) nod C is a common nod gene and nod H is a host specific gene

d) nod H is a common nod gene and nod P is a host specific gene

Choose the correct answer from the above statements: