Which of the following mediates the defense responses against insect herbivory in Arabidopsis

TLS Online TPP Program

#Question id: 41073

#Unit 8. Inheritance Biology

Q. A researcher is studying a novel receptor kinase involved in cell signaling. The functionally active form of this receptor is a homodimer that forms at the cell membrane upon ligand binding. The researcher isolates a mutant allele that produces a structurally altered, kinase-dead version of the receptor. When a heterozygous cell line (carrying one normal allele and one mutant allele) is generated, signaling is almost completely abolished, mimicking a null phenotype. Biochemical analysis reveals that the mutant protein is stably expressed and still binds to the normal protein.

which of the following best explains this observation?

TLS Online TPP Program

#Question id: 41074

#Unit 8. Inheritance Biology

Q. What is the primary advantage of utilizing conditional mutants in genetic research?

TLS Online TPP Program

#Question id: 3216

#Unit 9. Evolution & Diversity of Life Forms

The frequency of galactosemia is approximately 1 in 40,000 live births. The frequency of the carrier state can be calculated as

TLS Online TPP Program

#Question id: 3250

#Unit 9. Evolution & Diversity of Life Forms

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1, A1A2 and A2A2 genotype is 0.01, 0.18 and 0.81) Which of the following statement is correct?

TLS Online TPP Program

#Question id: 3251

#Unit 9. Evolution & Diversity of Life Forms

Looking at 3 allele per locus and following Hardy Weinberg equilibrium what will be the expected heterozygosity if q1=0.5, q2=0.3, q3=0.2

TLS Online TPP Program

#Question id: 3252

#Unit 9. Evolution & Diversity of Life Forms

 The unaffected brother of a cystic fibrosis affected girl is referred for genetic counseling. Assume that the population is in Hardy-Weinberg equilibrium. Which of the following is correct?  (Cystic fibrosis is an autosomes recessive inheritance with an incidence of 1 in 2500).