× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
c
5
j
5
a
5
L
5
f
5
j
5
D
4
k
4
y
4
t
4
h
4
l
4
New Topic  
rubtel1 rubtel1
wrote...
Posts: 1
Rep: 0 0
10 years ago
Part A - Allele segregation and gamete formation
One character in peas that Mendel studied was yellow versus green seeds.
A cross between a homozygous yellow line (YY) and a homozygous green line (yy) will result in F1 plants that are heterozygous (Yy) for this trait and produce
Part B - Punnett square
Punnett squares are convenient ways to represent the types and frequencies of gametes and progeny in experimental crosses.

This Punnett square shows the results of a Yy x Yy cross to form F2 progeny.

Use your understanding of Mendel’s law of segregation and the rules of probability to complete the Punnett square for this cross.
First identify the gametes. Use pink labels to identify the male and female gamete types and white labels to identify the gamete frequencies.
 Then identify the F2 progeny. Use pink labels to identify the progeny genotypes and white labels to identify the progeny frequencies.

Part C - Using the Punnett square to make predictions
Use the completed Punnett square in Part B to answer the questions below about the F2 generation.
Answer each question in the table by dragging the correct label to the appropriate location. Labels can be used once, more than once, or not at all.
Read 8519 times
1 Reply

Related Topics

Replies
wrote...
Staff Member
Educator
10 years ago
Punnett squares are convenient ways to represent the types and frequencies of gametes and progeny in experimental crosses.

This Punnett square shows the results of a Gg x Gg cross to form F2 progeny.

GG x gg-----------------p
Gg ---------- F1 progeny.

Gg x Gg-------------------F2

gamets
G
g
G
GG
Gg
g
Gg
gg

genotypic ratio is 1:2:1 Gg : 2 Gg: 1 gg or 1:2:1.
The phenotypic ratio is 3 green:1 yellow or 3:1.
Jimmybobjoe
Mastering in Nutritional Biology
Tralalalala Slight Smile
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  980 People Browsing
 102 Signed Up Today
Related Images
  
 65
  
 1666
  
 4232
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 432