TLS Online TPP Program

#Question id: 7221


The cells of the neural plate are characterized by expression of the Sox family of transcription factors (Sox1, 2, and 3). These factors-

#Unit 5. Developmental Biology
  1. Activate the genes that specify cells to be neural plate and inhibit the formation of epidermis and neural crest by blocking the transcription and signaling of BMPs.
  2. Inhibit the genes that specify cells to be neural plate and activate the formation of epidermis and neural crest by blocking the transcription and signaling of BMPs.
  3. Activate the genes that specify cells to be neural plate as well as formation of epidermis and neural crest.
  4. Inhibits both the genes that specify cells to be neural plate as well as formation of epidermis and neural crest.
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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.

TLS Online TPP Program

#Question id: 3559

#Unit 8. Inheritance Biology

Homozygous yellow was crossed with green seed plant. All F1 offspring having yellow seed plant were allowed to self fertilization to produced F2 plant. Further F2 plant self fertilized. What is phenotype ratio in F3 generation?

TLS Online TPP Program

#Question id: 3560

#Unit 8. Inheritance Biology

During which phase of meiosis does the segregation described by Mendel primarily occur?