TLS Online TPP Program

#Question id: 4331


In eukaryotic cells, transcription cannot begin until

#SCPH05 I Biotechnology
  1. the two DNA strands have completely separated and exposed the promoter.

  2. several transcription factors have bound to the promoter.

  3. the 5 caps are removed from the mRNA.

  4. the DNA introns are removed from the template.

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TLS Online TPP Program

#Question id: 15006

#SCPH12 I Genetics

Which of the following is not a mechanism for sex determination?

TLS Online TPP Program

#Question id: 15007

#SCPH12 I Genetics

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: 15008

#SCPH12 I Genetics

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?

TLS Online TPP Program

#Question id: 15009

#SCPH01 Biochemistry

A mutation in which most of the protein coding sequence of the gene is removed is most likely to be which type of allele?

TLS Online TPP Program

#Question id: 15009

#SCPH12 I Genetics

A mutation in which most of the protein coding sequence of the gene is removed is most likely to be which type of allele?

TLS Online TPP Program

#Question id: 15010

#SCPH01 Biochemistry

The phenomenon where half the "normal" level of functional protein is not enough to generate a normal phenotype is called haploinsufficiency. Which of the following situations demonstrates haploinsufficiency?