TLS Online TPP Program

#Question id: 2893


Which of the following statement regarding the Nucleosome-remodeling complexes is CORRECT?

#Unit 2. Cellular Organization
  1. SWI/SNF found in all eukaryotic cells that together remodel chromatin so that nucleosomes become more regularly spaced, and inhibit the binding of transcription factors.

  2. Some members of a third family, SWR1, are involved in deposition of the H2A.Z histone variant transcriptionally active chromatin.

  3. SWI (switching) was discovered as a protein required for repression of certain genes involved in mating-type switching in yeast.

  4. The complex of GCN5 (general control non derepressible) and ADA (alteration/deficiency activation) proteins was discovered during investigation of the regulation of nitrogen metabolism genes in eukaryotes.

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TLS Online TPP Program

#Question id: 3553

#Unit 8. Inheritance Biology

Diploid cell genotype AaBb undergoes meiosis that generates new combinations of alleles by which mechanism when gene A and B located on the same chromosome?  

TLS Online TPP Program

#Question id: 3554

#Unit 8. Inheritance Biology

The diploid cell with 6 pairs of chromosomes can divide. How many possible different combinations of maternal and paternal chromosomes in metaphase?

TLS Online TPP Program

#Question id: 3555

#Unit 8. Inheritance Biology

In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. If an F1 plant is cross with the heterozygous for bitter and no spots, what phenotypes ratio are expected in the offspring?

TLS Online TPP Program

#Question id: 3556

#Unit 8. Inheritance Biology

Flower color in plant follows incomplete dominance. Cross between AA and aa results all F1 offspring are uniform were allowed to cross with AA genotype. What will be phenotype ratio?

TLS Online TPP Program

#Question id: 3557

#Unit 8. Inheritance Biology

What was the most significant conclusion that Gregor Mendel drew from his experiments with pea plants?

TLS Online TPP Program

#Question id: 3558

#Unit 8. Inheritance Biology

Cystic fibrosis (CF) is a Mendelian disorder in the human population that is inherited as a recessive. Normal parents have two children with CF. The probability of their next child being normal son for this characteristic.