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TLS Online TPP Program

#Question id: 7273

Hox9 and Hox10 paralogues specify the stylopod, Hox11 paralogues specify the zeugopod, and Hox12 and Hox13 paralogues specify the autopod. This scenario has been confirmed by numerous experiments.

Which of the following experiment correctly describe this scenario?

#Unit 5. Developmental Biology
  1. If knocked out all six alleles of the three Hox10 paralogues (Hox10aaccdd) in mouse embryos, the resulting mice not only had severe axial skeletal defects, they also had no femur or patella they did have humerus.
  2. When all six alleles of the three Hox11 paralogues were knocked out, the resulting hindlimbs had tibias-fibulas but neither femur nor humerus.
  3. knocking out all the paralogous Hoxa9 and Hoxd12 loci resulted in loss of the autopod.
  4. If knocked out all six alleles of the three Hox10 and Hox11 paralogues (Hox10aaccdd) in mouse embryos, the resulting mice have no limb.
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TLS Online TPP Program

#Question id: 10263

#Unit 8. Inheritance Biology

During cell division, sometimes there will be failure of separation of sister chromatids. This event is called
TLS Online TPP Program

#Question id: 10264

#Unit 8. Inheritance Biology

Chiasmata formation occurs during
TLS Online TPP Program

#Question id: 10265

#Unit 8. Inheritance Biology

The alternate form of a gene is
TLS Online TPP Program

#Question id: 10266

#Unit 8. Inheritance Biology

Self-pollination is the transfer of pollen from the anther of a flower to the stigma:
TLS Online TPP Program

#Question id: 10267

#Unit 8. Inheritance Biology

Exceptions of law of dominance are

a. Incomplete dominance

b. Codominance

c. Nondisjunction

d. Linkage
TLS Online TPP Program

#Question id: 10268

#Unit 8. Inheritance Biology

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