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#Question id: 7191

In tunicate embryo, Presumptive endoderm originates from the vegetal A4.1 and B4.1 blastomeres. The specification of these cells coincides with the localization of β-catenin. Which of the following statement is incorrect?

#Unit 5. Developmental Biology
  1. Inhibition of β-catenin results in the loss of endoderm and its replacement by ectoderm in the tunicate embryo.
  2. increasing β-catenin synthesis causes an increase in the endoderm at the expense of the ectoderm (just as in sea urchins).
  3. The β-catenin transcription factor appears to function by activating the synthesis of the homeobox transcription factor Lhx3. Inhibition of the lhx3 message prohibits differentiation of endoderm.
  4. During the differentiation of endoderm β-catenin inhibits the synthesis of Lhx3. Expression of Lhx3 message causes differentiation of ectoderm.
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TLS Online TPP Program

#Question id: 1673

#Unit 4. Cell Communication and Cell Signaling

N-region insertion is associated with the expression of:
TLS Online TPP Program

#Question id: 5331

#Unit 8. Inheritance Biology

In some me insect XX is female and XO is male. Red body color caused by recessive mutation, while wild type body color is green .Gene for body colour on X chromosome .if homozygous red female is crossed with wild type male, the phenotype of their offspring will be
TLS Online TPP Program

#Question id: 10511

#Unit 6. System Physiology – Plant

Which type of pumps inhibits digitoxin in the membranes of heart cells, leading to increased myocardial contraction?
TLS Online TPP Program

#Question id: 24263

#Unit 2. Cellular Organization

Choose the incorrect option
TLS Online TPP Program

#Question id: 11610

#Unit 6. System Physiology – Plant

Environmental factors such as photoperiod and temperature can alter the levels of active gibberellins by affecting gene transcription for specific steps in the biosynthetic pathway such as;

a) Promotion of germination by light has been shown to be due to increases in GA1 levels resulting from a light-induced increase in the transcription of the gene for GA3ox, which converts GA20 to GA1

b) level of GA20-oxidase occurs in the highest amount in shoot tips and elongating stems, is increased under long-day conditions.  The fact that GA 20-oxidase is the enzyme that converts GA53 to GA20

c) Giving cold treatment  of Thlaspiarvense and a return to high temperatures, the ent-kaurenoic acid is converted to GA9, the most active gibberellin for stimulating the flowering response

d) Potato plants overexpressing the GA20ox gene showed tuberization, whereas transformation with the antisense gene for GA20ox inhibited tuberization

Which of the following from the given above statements is correct?