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#Question id: 3831

State whether the following statements is true/false regarding DNA replication.

1. In E. coli replication begins at the origin of replication and proceeds in one direction until the entire circular DNA molecule has been copied.

2. The chromosome of the fruit fly (D. melanogaster) is about twice as large as the E. coli chromosome.

3. Prokaryotic DNA replication occurs in two steps. First, ATP provides a phosphate to the growing DNA chain. This is followed by addition of a nucleoside.

4. DNA polymerase III is the largest DNA polymerase in E. coli.

5. The β subunits of E. coli DNA polymerase form a sliding clamp that surrounds the DNA strands at the replication fork.

#Unit 3. Fundamental Processes

1-F, 2-F, 3-F, 4-T, 5-T
1-F, 2-T, 3-F, 4-T, 5-T
1-F, 2-F, 3-T, 4-T, 5-F
1-F, 2-F, 3-F, 4-T, 5-F

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TLS Online TPP Program

#Question id: 4773

#Unit 8. Inheritance Biology

In Drosophila body color gene present on X chromosome but wing shape present on autosome. Gray body color is dominant over yellow body color. Long wing is dominant over short wing. Female is heterozygous for Gray body with long wing was cross with male that yellow body with short wing. Which of the following is correct approximate number of some phenotype of 400 offspring?

TLS Online TPP Program

#Question id: 4774

#Unit 8. Inheritance Biology

Which of the following above cross showing one gene segregation?

TLS Online TPP Program

#Question id: 4775

#Unit 8. Inheritance Biology

Female parent	Male Parent	Offspring
Recessive phenotype	Dominat phenotype	F1 A- all recessive phenotype
Dominat phenotype	Recessive phenotype	F-1 B all dominant phenotype
F1A	F1 B	all dominant phenotype

Which of the following is correct observe for above genetic cross?

TLS Online TPP Program

#Question id: 4776

#Unit 8. Inheritance Biology

True breeding agouti mice with genotype AABB were cross to true breeding albino mice with genotype aabb. All F1 offspring having agouti phenotype were allowed to intercross to produce F2 progeny as following

A- B - agouti,

aa B- black

-- bb albino

Following genetic cross and there proportional?

Genetic cross	Proportional of albino
AaBbXAaBb	A
AaBb X aabb	B
Aabb X aaBb	C
AABbX aaBb	D

TLS Online TPP Program

#Question id: 4777

#Unit 8. Inheritance Biology

Two non allelic genes P and Q governed Glume color in sorghum.

P... qq = blakish purple P.. Q... = raddish purple

pp Q... = brown ppqq = brown

A cross was allowed between PpQq and ppQq. What is proportional of their progeny with Blakish, Raddish and brown respectively?

TLS Online TPP Program

#Question id: 4778

#Unit 8. Inheritance Biology

The following is the biochemical pathway for purple pigment production in flowers of sweet pea: A cross is made between two parents with the genotype: Aabb x AaBb. What is proportional of plant with purple pigment?