Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 8265
TLS Online TPP Program

#Question id: 11483

Experiments with genetically altered mice showed that the mice would consume abnormally high amounts of bitter-tasting compounds in water after their ________.

#Unit 7. System Physiology – Animal
  1. hormone receptors for digestive hormones were reduced or eliminated, showing that bitter tastes are reinforced by digestive responses
  2. salt-taste cells were altered to express receptors for bitter tastants, suggesting that animals have unregulated salt appetites
  3. visual sense was reduced or eliminated, suggesting that mice learn visual cues about bitter tastes
  4. sweet-taste cells were altered to express receptors for bitter tastants, suggesting that the sensation of taste depends only on which taste cell is stimulated
More Questions
TLS Online TPP Program

#Question id: 4756

#Unit 8. Inheritance Biology

In summer squash, white colour fruit (W) is dominant over yellow colour (w) and disc-shaped phenotype (D) is dominant over sphere-shaped phenotype (d). Determine the genotype of the parents gives 3/8 white, sphere, 3/8 white, Disk, 1/8 Yellow, Disk and 1/8 Yellow, Sphere?
TLS Online TPP Program

#Question id: 4757

#Unit 8. Inheritance Biology

The newborn baby of a mother having blood group O, Rh+ and father having blood group AB, Rh-, got mixed with other babies in the hospital. The baby with which of the following blood groups is not confirmable to be of the said couple?

(i) AB, Rh+                                                    (ii) O, Rh+

(iii) A, Rh+                                         (iv)  B, Rh+
TLS Online TPP Program

#Question id: 4758

#Unit 8. Inheritance Biology

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?
TLS Online TPP Program

#Question id: 4759

#Unit 8. Inheritance Biology

which of the following is not a mechanism for sex determination?
TLS Online TPP Program

#Question id: 4760

#Unit 8. Inheritance Biology

you set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. you notice in the f1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). which of the following explanations is the most likely?
TLS Online TPP Program

#Question id: 4761

#Unit 8. Inheritance Biology

which of the following statements about a lethal allele is not correct?