Homework #2 Due Wednesday

[Sam]

Anth1
Homework #2

This is due the second class of Week 4
Remember that it needs to be ON TIME
No late work accepted
Here is the second homework to hand in
Show your work
1) Mendel did experiments where he kept track of seed texture
(wrinkled or smooth). First, he created true breeding lines: parents
with smooth seeds produced offspring with smooth seeds, and parents
with wrinkled seeds produced offspring with wrinkled seeds. When he
crossed wrinkled with smooth peas from these true-breeding lines, all
of the offspring were smooth. Which trait is recessive?
When he crossed members of the F1 generation what did he see?
If he crossed 1000 plants from the F1 generation how many would be
wrinkled?
What is the phenotypic ratio of the F2 generation?
What would be the genotypic ratio had he backcrossed members of the F1
generation with individuals from the true breeding line (like their
parents) with
smooth seeds?
What about the phenotypic ratio when he crossed the F1 generation and
the
wrinkled true-breeding line?
2) Describe the concept of the inheritance of acquired
characteristics, and explain why you think it is incorrect.