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In a dihybrid cross, if two heterozygotes (for both genes) are crossed, what will be the expected phenotypic ratios? (In the following order: dominant for both traits; dominant for the first trait and recessive for the second; recessive for the first trait and dominant for the second; recessive for both traits.)
Group of answer choices

6:6:3:1

4:4:4:4

9:3:3:1

1:2:2:1

Respuesta :

samueladesida43

In a dihybrid cross, if two heterozygotes (for both genes) are crossed, the expected phenotypic ratios is as follows:

  • dominant for both traits: 9
  • dominant for the first trait and recessive for the second: 3
  • recessive for the first trait and dominant for the second; 3
  • recessive for both traits: 1

WHAT IS A DIHYBRID CROSS?

A dihybrid cross is a cross between two individuals that are both heterozygous for the involved genes.

According to this question, if two individuals that are heterozygous for two genes are crossed i.e. BbCc × BbCc, the following offsprings are produced:

  • B_C_ = 9
  • B_cc = 3
  • bbC_ = 3
  • bbcc = 1

Therefore, in a dihybrid cross, if two heterozygotes (for both genes) are crossed, the expected phenotypic ratios is as follows:

  • dominant for both traits: 9
  • dominant for the first trait and recessive for the second: 3
  • recessive for the first trait and dominant for the second; 3
  • recessive for both traits: 1

Learn more about dihybrid cross at: https://brainly.com/question/1185199

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