TLS Online TPP Program

#Question id: 4771


The normal eye color of Drosophila is red, but strains in which all flies have brown eyes are available. Similarly, wings are normally long, but there are strains with short wings. A female from a pure line with brown eyes and short wings is crossed with a male from a normal pure line. The F1 consists of normal females and short-winged males. An F2 is then produced by intercrossing the F1. Both sexes of F2 flies show phenotypes as follows:

Are genes for eye color and wing length x link or autosome? 

#Unit 8. Inheritance Biology
  1. Eye color gene is x-linked and the wing length is autosome

  2. Eye color gene is Auosome and the wing length is X-linked

  3. both genes are x link

  4. both genes are autosome

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TLS Online TPP Program

#Question id: 3577

#Unit 8. Inheritance Biology

Which is the most correct description of a dominant trait?

TLS Online TPP Program

#Question id: 3578

#Unit 8. Inheritance Biology

A locus is:

TLS Online TPP Program

#Question id: 3579

#Unit 8. Inheritance Biology

Following some statement is correct with monohybrid and Dihybrid cross?

A) Two alleles for gene segregate into gametes in equal proportions.

B) Monohybrid F2 phenotype 1:2:1 ratio conclude, there is no segregation in character

C)  Monohybrid F2 phenotype 3:1 ratio conclude, there is a no blending inheritance

D) Dihybrid F 2 phenotype 3:1 ratio conclude complete linkage

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

TLS Online TPP Program

#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

TLS Online TPP Program

#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