TLS Online TPP Program

#Question id: 31183


When a mouse retroviral DNA, the mammary tumor virus (MMTV) genome, became inserted near the Wnt-1 gene, the retrovirus LTR promoter, results: 

#Unit 4. Cell Communication and Cell Signaling
  1. Activated inappropriate expression of the Wnt-1 gene and inhibits cell division
  2. Deactivated inappropriate expression of the Wnt-1 gene and promotes cell division
  3. Activated appropriate expression of the Wnt-1 gene and inhibits cell division
  4. Activated inappropriate expression of the Wnt-1 gene and promotes cell division
More Questions
TLS Online TPP Program

#Question id: 4924

#Unit 8. Inheritance Biology

Following statement given for a character

A- Characteristics based on autosomal genes

B- Biparntal inheritance

C-pattern of gene expression depend on parental origin

Which of the following having above statements feature?

TLS Online TPP Program

#Question id: 4925

#Unit 8. Inheritance Biology

The pedigree in Figure shows the transmission of a trait in a particular family. Based on this pattern of transmission, the trait is most likely

TLS Online TPP Program

#Question id: 4926

#Unit 8. Inheritance Biology

Shell coiling in snail is determined by genetic maternal effect for a single loci having D allele for dextral coiling but S allele for sinistral coiling. D dominant over S. which of the following cross would produced all progeny that is dextral coiling ?

I- DD Male X SS female

II- DD Male X DS female

III- SS Male X DD female

IV - DS Male X DS female

TLS Online TPP Program

#Question id: 4927

#Unit 8. Inheritance Biology

following cross were allowed

I-Recessive phenotype female X Dominat phenotype male = all recessive phenotype

II-Recessive phenotype male X Dominat phenotype female = all dominant phenotype

Which of the following conclusion?

TLS Online TPP Program

#Question id: 4928

#Unit 8. Inheritance Biology

A certain kind of snail can have a right-handed direction of shell coiling (D) or left handed coiling (d). If direction of coiling is due to a protein deposited by the mother in the egg cytoplasm, then a Dd egg-producing snail and a dd sperm-producing snail will have offspring of which genotype(s) and phenotype(s)?

TLS Online TPP Program

#Question id: 4929

#Unit 8. Inheritance Biology

Maternal inheritance of coiling of shell in snail (limnaea peregra) is well established. The dextral coiling depends on dominant allele D and sinistral coiling depends upon recessive allele d. A female F1 progeny of dextral(Dd) type is crossed with a male dextral (Dd). What will be the phenotype ratio in progeny?