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#Question id: 1532

For a particular microarray assay (DNA chip), cDNA has been made from the mRNAs of a dozen patients' breast tumor biopsies. Which of the following types of evidence will researchers be looking for in order to determine if the cells are cancerous?

#Unit 4. Cell Communication and Cell Signaling

  1. a particular gene that is amplified in all or most of the patient samples

  2. a pattern of fluorescence that indicates which cells are over proliferating

  3. a pattern shared among some or all of the samples that indicates gene expression differing from control samples

  4. a group of cDNAs that match those in non-breast cancer control samples from the same population

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TLS Online TPP Program

#Question id: 3603

#Unit 8. Inheritance Biology

Blue follower is dominant over white flower and long pollen is dominant over short pollen. A plant with Blue flower and short pollen was cross with white flower and long pollen. Their progeny, ½ had a blue flower with long pollen and another ½ had a white flower with long pollen was allowed to intercross. Which of the following observation is correct among these progeny when independently assort?
TLS Online TPP Program

#Question id: 3604

#Unit 8. Inheritance Biology

Genes A, B and C. control three phenotypes which assort independently; A plant with the genotype aaBbCc were cross with AabbCc. What is the probability for progeny which show the dominant phenotype for AT LEAST ONE of the phenotypes controlled by genes A, B and C?
TLS Online TPP Program

#Question id: 3605

#Unit 8. Inheritance Biology

Male Plant blue flower with long pollen was crossed with female plant white flower with long pollen. Analysis of progeny of this cross showed that 50% of the progeny was red with long pollen while the remaining 50% of the progeny was white with long pollen. Which one of the following statements is a possible explanation of the above results?
TLS Online TPP Program

#Question id: 3606

#Unit 8. Inheritance Biology

Genes A, B and C. control three phenotypes which assort independently; A plant with the genotype Aa Bb Cc is selfed. What is the probability for progeny which show the heterozygocity for AT LEAST ONE locus?
TLS Online TPP Program

#Question id: 3607

#Unit 8. Inheritance Biology

Cystic fibrosis is caused by a recessive lethal gene and can be detected by an excess concentration of chloride in sweat. If a sweat test reveals a man to be heterozygous and his wife to be homozygous normal, what are the chances that their children will have the disease?
TLS Online TPP Program

#Question id: 3608

#Unit 8. Inheritance Biology

Mendel crossed plants with the seed characters round and yellow with plants having the contrasting seed characters wrinkled and green. Round is dominant

to wrinkled, and yellow is dominant to green. The F1 progeny were all round and yellow. What will be genotype ratio in F2 generation?