Answer:
A :an atom seeks to fill its outer shell of electrons
Explanation:
Reactions between atoms occur due the desire of an atom to fill their outer shell electrons.
The driving force for many interatomic bonding is the tendency to have completely filled outer energy levels like those of the noble gases.
- The various interatomic interaction which leads to chemical reaction is in a bid for the atoms to be isoelectronic in the outer energy level with the noble gases.
- This is achieved by gaining, losing or sharing of electrons.
Answer:
The main step to prepare herbarium sheet are:
Collection and pressing of specimens. Fresh materials are pressed in plant press in herbarium press. ...
Drying of specimens. ...
Mounting of specimens on herbarium sheets. ...
Labeling of specimens. ...
To solve this problem on genetic dominance, we will need a punnet square.
Let's let P represent purple-flowered and p represent white-flowered.
We have one purple flowered plant with the alleles PP, and we have one white flowered plant with the alleles pp. Using a punnet square, we can determine the alleles of the offspring.
<u>P</u> <u>P</u>
p| Pp Pp
p | Pp Pp
As we can tell from our punnet square, all of our offspring will have purple flowers. This is because the purple-flower allele is dominant and the white-flowered allele is recessive.
Since each flower has a dominant and recessive allele, they are heterozygous.
Therefore, the solution to this problem is D.
Answer:
Option A, Jean-Baptiste Lamarck
Explanation:
Options
a. Jean-Baptiste Lamarck
b. Georges Cuvier
c. Thomas Malthus
d. Charles Darwin
e. Charles Lyell
Solution
The second law of Lamarck stated that all living organism eventually adapt to the environment in which they live. However, such adaptations are continuous thereby leading to evolution of species gradually over a long period of time. Lamarck published his theory of evolution in 1801, while Darwin published his book on “origin of species in 1859.
The result predicted by Lamarck regarding impact of environment on evolution was further supported by Darwin, and future scientist.
Hence, option A is correct
Karyotype helps to study the presence and location of genes on chromosome. This also helps to find the mutations such as duplication or deletions.
