Sulfotransferases are the first enzymes of the core sulfation pathways, they transfer sulfate from PAPS to the hydroxyl or amino group of a wide variety of acceptors, as given below

a. Molecular basis of symbiotic host specificity in Rhizobium meliloti: nodH and nodPQ genes encode the sulfation of lipochito-oligosaccharide signals

b. Sulfation of the choriogonadotropin alpha subunit in human placental explants

c. Tyrosine sulfation of the amino terminus of CCR5 facilitates HIV-1 entry

d. A tyrosine-sulfated peptide based on the N terminus of CCR5 interacts with a CD4-enhanced epitope of the HIV-1 gp120 envelope glycoprotein and inhibits HIV-1 entry.

e. The Xanthomonas oryzae pv. oryzae raxP and raxQ genes encode an ATP sulfurylase and APS kinase that are required for AvrXa21 avirulence.

Which one of the following combination of above statements is correct?

#Question id: 4891

#Unit 8. Inheritance Biology

plantlike organism on the planet Pandora can have three recessive genetic traits: bluish leaves, due to an allele (a) of gene A; a feathered stem, due to an allele (b) of gene B; and hollow roots due to an allele (c) of gene C. The three genes are linked and recombine. A geneticist performed a testcross with an organism that had been found to be heterozygous for the three recessive traits, and she was able to identify progeny of the following phenotypic distribution (+ = wild type):

 A) Genes are in the order: a-c-b

B) Genes are in the order: a-b-c.

C) Genes are in the order: b-a-c

D) Interference is one

E) Greatest distance between gene a and b

#Question id: 4892

#Unit 8. Inheritance Biology

The RFLP pattern for this locus, obtained by hybridization using a probe internal sites, from family is shown below: Based on the above profile, what is the nature of the genetic disorder?

#Question id: 4893

#Unit 8. Inheritance Biology

In tomatoes, tall (D) is dominant over dwarf (d) and smooth fruit (P) is dominant over pubescent fruit (p), which is covered with fine hairs. A farmer has two tall andsmooth tomato plants, which we will call plant A and plant B. The farmer crosses plants A and B with the same dwarf and pubescent plant and obtains the following numbers of progeny

a. The genotypes of both plant A and plant B are DdPp

b. In plant A, Gene D and Gene P link as cis configuration

c. In plant B, Gene D and Gene P link as cis configuration

d. In plant A, Gene D and Gene P link as trans configuration

e. In plant B, Gene D and Gene P link as trans configuration

Which of the following above statement are not correct?

#Question id: 4894

#Unit 8. Inheritance Biology

Following is figure showing restriction site on coding gene. Which of the following is mode of inheritance?

#Question id: 4895

#Unit 8. Inheritance Biology

What is the difference between a linkage map and a physical map?

a) Genetic maps are based on recombination frequencies, but physical maps are based on restriction digestion.

b) Physical DNA map describes the absolute position of genes on a chromosome while genetic map so variable

c) Genetic maps are important to identify the origin of diseases, whether they are inherited or arise due to a random mutation.

#Question id: 4896

#Unit 8. Inheritance Biology

A cross between individuals with genotypes AaBbX aabb produces the following progeny:

AaBb -  21, aaBb- 83, Aabb-   77,  aa bb -19

Which of the following statements is true?

a) Map unit between gene A and B

b) Configuration

c) parents genotype of AaBb