LAMARCK's THEORY
Jean Baptiste Lamarck (1744-1829) proposed a theory which was published in "<em>Philosophie Zoologique"</em> (1809). This theory is simply known as Lamarckism. It has two main postulates:
1. Use and disuse of organs
2. Inheritance of acquired characters.
Example
He explained his theory by giving the examples:
1. Neck length of Girrafes
2. Webbed toes of water birds, and
3. Wings of penguins
Explanation
Lamarck explained that water birds use toe for swimming, with the passage of time webbed were developed in their toes. these features were then transferred to their offspring.
Drawback
Lamarck theory was based on natural observation. It did not explain the genetic basis of such characteristics.
Answer:
The presence of starch in leaves is testing with the Iodine test.
Explanation:
First, chlorophyll is removed from the leaf by boiling it in alcohol.
Then, two drops of iodine solution are put onto the leaf.
If the colour changes to blue, it indicates the presence of starch.
If it does not, there is no starch.
I hope this helps!
-Bella
<em>BrainlyBluebell</em>
Answer:
The correct answer will be-
3'- T U U C G C T T G U C G C T C C T G U U G -5'.
Explanation:
The formation of the mRNA from the template strand or anti-sense strand is known as the transcription.
The nucleotide in the mRNA is added in the same way as the DNA according to the Chargaff rules which states that A will bind to T and G will bind to C but instead of adenine in mRNA will add uracil.
On the basis of this, the mRNA strand will be-
template strand: 5' A T T G C G A A C T G C G A G G A C T T C- 3'
mRNA strand: 3'- T U U C G C T T G U C G C T C C T G U U G-5'.
