× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
adrii01 adrii01
wrote...
Posts: 55
10 years ago
As with all multicellular organisms, homeotic genes in plants control morphogenesis (how the tissues and organs of the plant are arranged).
   
   In maize plants, the homeotic gene KNOTTED1 (abbreviated KN1) helps maintain the indeterminate state of shoot apical meristems.
In wild-type maize plants, KN1 is expressed at high levels in the shoot apical meristem, but is expressed at low levels in leaves.

   In some mutant maize plants, KN1 is expressed at high levels in leaves. In those plants, outgrowths or knots of adventitious shoot meristems (shoot meristems that appear in abnormal locations on the leaves) form.

Use this information to determine which of the following statements are true.

Select the four statements that are true.

1. In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.
2. Both the wild-type and mutant maize leaves have the same morphology.
3. Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
4. In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.
5. Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.
6. In wild-type maize plants, the KN1 gene is present in shoot apical meristem cells, but not in leaf cells.
7. In mutant maize leaves, the KN1 gene is mostly not expressed.
Read 14317 times
8 Replies

Related Topics

Replies
wrote...
Staff Member
Educator
10 years ago
HI adrii01

I totally missed your thread. What did you end up discovering here. Mind sharing your answer?

Sorry about that.
Mastering in Nutritional Biology
Tralalalala Slight Smile
wrote...
10 years ago
Maybe it's a little late, but I found the following to be true:

   Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.
    Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
    In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.
   In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.
llkay,  amiee33,  ashienad,  mavalen,  hnoory,  Violet739,  Rahpoo,  world9999
wrote...
9 years ago

Maybe it's a little late, but I found the following to be true:

   Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.
    Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
    In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.
   In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.
Not correct Frowning Face
wrote...
9 years ago

Maybe it's a little late, but I found the following to be true:

   Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.
    Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
    In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.
   In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.
Not correct Frowning Face

Did you figure out what it was??
quangers
wrote...
9 years ago
In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.

Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.

Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.

In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.

^^Correct answers
wrote...
9 years ago
Maybe it's a little late, but I found the following to be true:

   Leaves of the mutant maize plants produce more KN1 protein than leaves of wild-type maize plants.
    Expression of the KN1 gene in shoot apical meristem cells produces a protein involved in the maintenance of shoot apical meristems.
    In wild-type maize plants, the KN1 gene is mostly expressed in shoot apical meristem cells.
   In wild-type maize plants, the KN1 gene is expressed differentially in shoot apical meristem cells and leaf cells.

I also found these to be correct.
wrote...
9 years ago
These are correct on mastering Biology.
wrote...
9 years ago
Oleviski is correct. Thank you.
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1017 People Browsing
Related Images
  
 393
  
 624
  
 920