Jump to content

Monohybrid Cross (Help!)

Nor Antonio
in Genetics

Featured Replies

Hi, can you help me solve this monohybrid cross? (Most especially on letter B). Thank you.

 

1.    In humans, achondroplasia “dwarfism” is dominant over normal. A homozygous dominant person dies before the age of one. A heterozygous person is dwarfed. A homozygous recessive individual is normal. A heterozygous dwarf man marries a dwarf heterozygous woman. 
a. What is the probability (in percent) of a having a normal child? 
b. What is the probability (in percent) that the next child will also be normal? 
c. What is the probability (in percent) of having a child that is a dwarf? 
d. What is the probability (in percent) of having a child that dies at one from this disorder?

Edited by Nor Antonio
Wrong spelling

Look at the possible combinations N = Normal height and A -Achondroplastic :

Man A and N     Woman A and N 

         A                x               A                   = Achondroplastic and won't survive

         A                x                N                 = Achondroplastic

         N              x                 A                   =Achondroplastic

         N                x               N                   = Normal

Express the frequency of each type as a % .of the total crosses.

        

 

Edited by StringJunky

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.