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TLS Online TPP Program

#Question id: 4133

Which of the following statements about aminoacyl-tRNA synthetases is false?

#Section 3: Genetics, Cellular and Molecular Biology

  1. Some of the enzymes have an editing/proofreading capability.

  2. The enzyme attaches an amino acid to the 3' end of a tRNA.

  3. The enzyme splits ATP to AMP + PPi.

  4. The enzyme will use any tRNA species, but is highly specific for a given amino acid.

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TLS Online TPP Program

#Question id: 3581

#Section 2: General Biology

What is the probability that each of the following pairs of parents will produce the indicated offspring? (Assume independent assortment of all gene pairs.)

(a) AABBCc X  aabbcc → AaBbCc          (b) AABbCc  X AaBbCc → AAbbCC

(c) AaBbCc  X AaBbCc → AaBbCc         (d) aaBbCC  X  AABbcc → AaBbCc
TLS Online TPP Program

#Question id: 3581

#Section 3: Genetics, Cellular and Molecular Biology

What is the probability that each of the following pairs of parents will produce the indicated offspring? (Assume independent assortment of all gene pairs.)

(a) AABBCc X  aabbcc → AaBbCc          (b) AABbCc  X AaBbCc → AAbbCC

(c) AaBbCc  X AaBbCc → AaBbCc         (d) aaBbCC  X  AABbcc → AaBbCc
TLS Online TPP Program

#Question id: 3582

#Section 2: General Biology

Different genetic cross regarding two independently assorting non allelic gene with complete dominance and their phenotypic ratio showed in a following is correc

Genetic cross

Phenotype ratio

I

AABb X AaBb

A

1:1

II

AaBb X  aaBB   

B

3:3:1:1

III

Aabb X aaBb   

C

6:2 

IV

AaBb X Aabb   

D

1:1:1:1

TLS Online TPP Program

#Question id: 3582

#Section 3: Genetics, Cellular and Molecular Biology

Different genetic cross regarding two independently assorting non allelic gene with complete dominance and their phenotypic ratio showed in a following is correc

Genetic cross

Phenotype ratio

I

AABb X AaBb

A

1:1

II

AaBb X  aaBB   

B

3:3:1:1

III

Aabb X aaBb   

C

6:2 

IV

AaBb X Aabb   

D

1:1:1:1

TLS Online TPP Program

#Question id: 3584

#Section 2: General Biology

In a plant species, a segregating line (RR- Red, Rr- Pink and rr- white) that contains both homozygotes and heterozygotes at a locus can be made homozygous by repeated selfing for several generations. What is the proportional red flower in third generations of selfing, if the level of heterozygosity in generation '0' is denoted as 1?
TLS Online TPP Program

#Question id: 3584

#Section 3: Genetics, Cellular and Molecular Biology

In a plant species, a segregating line (RR- Red, Rr- Pink and rr- white) that contains both homozygotes and heterozygotes at a locus can be made homozygous by repeated selfing for several generations. What is the proportional red flower in third generations of selfing, if the level of heterozygosity in generation '0' is denoted as 1?