Which of the following statements about polymerase chain reaction is correct?

a) PCR denaturation temperature calculated by using Y = X (1+E)n

b) Size of the primer negatively affects the efficiency of PCR

c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.

d) Primer annealing of PCR at 550C for 1.5 min.

e) Time taken for each cycle of PCR considerably longer than 3 min.

#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?

#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

#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

#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?

#Question id: 4923

#Unit 8. Inheritance Biology

following statement given for Genetic maternal effect are correct?

A- Characteristics are determined by nuclear gene

B- Inherited according to Mendel’s principles

C- In F3 generation, segregation of Dominant trait and recessive trait in ratio of 3:1

D) No Segregation of Trait in F2 generation 

#Question id: 4922

#Unit 8. Inheritance Biology

Following statement is correct for Genetic maternal effect. 

A- Characteristics are determined by autosomal genes

B- Inherited according to Mendel’s principles

C- Phenotype of offspring determine by protein factor that is inherited via egg cytoplasm