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#Question id: 18938


If the sequence of at least the end portions of a DNA segment of interest is known, the number of copies of that DNA segment can be hugely amplified with the 

#Unit 13. Methods in Biology
  1. immunoprecipitation
  2. pulsed field gel electrophoresis
  3. site-directed mutagenesis
  4. polymerase chain reaction (PCR)
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TLS Online TPP Program

#Question id: 3580

#Unit 8. Inheritance Biology

Different genetic cross regarding two independently assorting non allelic gene with complete dominance and their phenotypic ratio showed in a following. Which of the following is incorrect combination? 

Genetic cross

Phenotype ratio

1

AABb X AaBb

3:1

2

Aabb X  AaBb   

3:1:3:1

3

AABb X AaBB   

1:1 

4

Aabb X aaBb   

1:1:1:1

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#Question id: 3581

#Unit 8. Inheritance 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

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#Question id: 3582

#Unit 8. Inheritance 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

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#Question id: 3583

#Unit 8. Inheritance Biology

In sesame plants, the one-pod condition (P) is dominant to the three-pod condition (p), and normal leaf (L) is dominant to wrinkled leaf (l). Pod type and leaf type are inherited independently. Determine the genotypes for the two parents for all possible cross producing the following offspring:

(a) 300 one-pod, normal leaf and 100 one-pod, wrinkled leaf

(b) 323 three-pod, normal leaf and 106 three-pod, wrinkled leaf

(c) 150 one-pod, normal leaf, 147 one-pod, wrinkled leaf, 51 three-pod, normal leaf, and 48 three-pod, wrinkled leaf

(d) 223 one-pod, normal leaf, 72 one-pod, wrinkled leaf, 76 three-pod, normal leaf, and 27 three-pod, wrinkled leaf

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#Question id: 3584

#Unit 8. Inheritance 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?

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#Question id: 3585

#Unit 8. Inheritance Biology

Tryhybrid cross allowed between AaBbCc X AaBbCc, what is the proportional of following genotype, If all character follow independent assortment?

AaBbCc, Aabbcc, AabbCc, AABBcc, AABbCC    respectively

1.      8/64        2/64      4/64          1/64     2/64

2.       6/64        1/64      2/64          1/64     1/64

3.       6/64        2/64      4/64          1/64     2/64

4.         0            2/64      4/64          1/64         0