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#Question id: 4992


The existence of the phenomenon of exaptation is most closely associated with which of the following reasons that natural selection cannot fashion perfect organisms?

#Unit 11. Evolution and Behavior
  1. Natural selection and sexual selection can work at cross-purposes to each other.

  2. Evolution is limited by historical constraints.

  3. Adaptations are often compromises.

  4. Chance events affect the evolutionary history of populations in environments that can change unpredictably.

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TLS Online TPP Program

#Question id: 3576

#Unit 8. Inheritance Biology

Which of the following most accurately restates Mendel's law of segregation?

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