Genetics Homework Help Needed ASAP!

  1. Hi nursing friends!

    I am desperately in need oh urgent help! I have to do this homework for genetics course I am taking and it just drives me nuts!

    Here it is:

    1. Achieve a desired phenotype

    Starting with heterozygous plants with smooth pea shape and long stem length generate pure breed (hint: homozygous recessive) of the opposite phenotype--wrinkled pea and short stem. Write all the crosses using genetics syntax, gametes, Punnett square.

    2. Calculate probability using two methods
    Two parents are heterozygous for tongue tolling and heterozygous bitter taster.
    a. What is the probability that their first child will be a non-roller and non-taster?
    b. What is the probability that two of their children will be non-rollers and non-tasters?

    If you know how to solve any of the problems, please, let me know!

    I thank you all in advance!!!
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  3. by   CardiacDork
    Dude come on...! Do some of the work and then we can help. This Bio 101. Show us what you know...
  4. by   georgiapeach27
    Watch Punnett Square Fun video on Khan Academy, it's majorly informative.