TLS Online TPP Program

#Question id: 3811


The mechanism of DNA replication is studied in an E. coli replication fork. Which is a characteristic of this replication fork?

#Section 3: Genetics, Cellular and Molecular Biology
  1. Strands I and II have base sequences that are identical to each other.

  2. Strands II and IV have an antiparallel orientation as the fork moves to the right.

  3. Strands I and III will be covalently bonded to each other when replication is completed.

  4. Strands III and IV will be H-bonded to each other when replication is completed.

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TLS Online TPP Program

#Question id: 4906

#Section 3: Genetics, Cellular and Molecular Biology

Shell coiling is a maternal effect phenotype controlled by S gene where S is dominant dextral phenotype over s sinistral phenotype. Dextral coiling Ss male snail was cross with sinistral coiling ss female snail, The phenotype of progeny is 

TLS Online TPP Program

#Question id: 4907

#Section 3: Genetics, Cellular and Molecular Biology

Two corn plants are studied. One is resistant (R) and the other is susceptible (S) to a certain pathogenic fungus. The following crosses are made, with the results shown

R male X S female = all S progeny

R female X S male = all R progeny

Which of the following are correct about inheritance?

TLS Online TPP Program

#Question id: 4908

#Section 3: Genetics, Cellular and Molecular Biology

Shell coiling of the snail is maternal effect phenotype control by S gene, where S Dextral is dominant over s sinistral. If snail sinistral coiled shell, which of the following statement is true

TLS Online TPP Program

#Question id: 4909

#Section 3: Genetics, Cellular and Molecular Biology

A pattern of transmission where all offspring have the same phenotype as their mother is consistent with which type of non-Mendelian inheritance?

TLS Online TPP Program

#Question id: 4910

#Section 3: Genetics, Cellular and Molecular Biology

For a trait known to be caused by a mitochondrial gene variant, there may be an occasional female that can transmit different phenotypes to her progeny on an apparently random basis. What situation might you suspect?

TLS Online TPP Program

#Question id: 4911

#Section 3: Genetics, Cellular and Molecular Biology

Neutral petite mutations: