TLS Online TPP Program

#Question id: 7283


The Drosophila orthodenticle gene and the vertebrate Otx genes are homologous and provide a good example of the conservation of gene function during evolution. Which of the following statement is correct regarding to the expression of gene expression.

#Unit 5. Developmental Biology
  1. Orthodenticle is expressed in the posterior region of the future Drosophila brain. In mice, Otx1 and Otx2 are expressed in overlapping domains in the developing forebrain and midbrain.
  2. Orthodenticle is expressed in the anterior region of the future Drosophila brain. In mice, Otx is expressed in overlapping domains in the developing forebrain.
  3. Orthodenticle is expressed in the posterior region of the future Drosophila brain. In mice, Otx1 and Otx2 are expressed in the developing limb.
  4. Orthodenticle is expressed in the proximal region of the future Drosophila limb. In mice, Otx1 and Otx2 are expressed in the developing limb.
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TLS Online TPP Program

#Question id: 10269

#Unit 8. Inheritance Biology

If the probability of being blood-type A is 1/8 and the probability of being blood-type O is 1/2, what is the probability of being either blood-type A or blood-type O?

TLS Online TPP Program

#Question id: 10270

#Unit 8. Inheritance Biology

Mendel crossed tall pea plants with dwarf ones. The F1 plants were all tall. When these F1 plants were selfed to produce F2 generation, he got a 3: 1 tall to dwarf ratio in the offspring. What is the probability that out of three plants (of F2 generation) picked up at random all three would be dwarf?

TLS Online TPP Program

#Question id: 10271

#Unit 8. Inheritance Biology

In cats, black coat color is dominant over gray. A female black cat whose mother is gray mates with a black male whose father is gray . If this female has a litter of 5 kittens, what is the probability that three will be black?

TLS Online TPP Program

#Question id: 10272

#Unit 8. Inheritance Biology

Specific place on a chromosome occupied by an allele

TLS Online TPP Program

#Question id: 10273

#Unit 6. System Physiology – Plant

The existence of different pathways that serve a similar function and can replace each other without a clear loss in function is called,

TLS Online TPP Program

#Question id: 10274

#Unit 6. System Physiology – Plant

In plastids, a partial glycolysis occurs that produces metabolites for plastidial biosynthetic reactions, which of the following is not synthesized in the plastid?