Slide 1 of 5

A diploid trout has 60 total chromomes (2n = 60). Its gametes have 30 chromsomes (n=30). Triploids can be made by an egg from a diploid female trout fertilized by a sperm from a tetraploid male trout.

How many chromsomes total does a tetraploid trout have? 

  • 30

  • 60

  • 120

  • 240

How many chromsomes are in the sperm made from a tetraploid trout? Recall that 2n=60 for a diploid trout.

  • 120

  • 90

  • 30

  • 60

How many chromsomes total does a triploid trout have? Recall that 2n=60 for a diploid trout.

  • 120

  • 90

  • 180

  • 60

Triploid organisms more fertile than diploid organisms.

  • False

  • True

Solution list
Question 1

A diploid trout has 60 total chromomes (2n = 60). Its gametes have 30 chromsomes (n=30). Triploids can be made by an egg from a diploid female trout fertilized by a sperm from a tetraploid male trout.

How many chromsomes total does a tetraploid trout have? 

120

Question 2

How many chromsomes are in the sperm made from a tetraploid trout? Recall that 2n=60 for a diploid trout.

60

Question 3

How many chromsomes total does a triploid trout have? Recall that 2n=60 for a diploid trout.

90

Question 4

Triploid organisms more fertile than diploid organisms.

False

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