Answer:
<em>The correct option is D) The expression of certain genes is affected by temperature.</em>
Explanation:
There are various factors which control the regulation of a gene. Temperature can be a regulatory factor for certain genes.
Probably, during the warm temperatures, the proteins regulating the fur colour to become reddish brown become activate these genes. As a result, the fur becomes evident.
In the winter, the enzymes controlling the fur might become degraded. A s a result, the genes are not able to express themselves. Hence, a white coat occurs.
<h3><u> Answer;</u></h3>
B. organelles
<h3><u>Explanation;</u></h3>
- Eggs contribute 50% of the chromosomes as well as cytoplasm and cellular mechanisms required for the cell to thrive and replicate.
- Mitochondria for example are particularly important to the embryo but are only passed from mother to child via the egg.
- Sperms on the other hand, are just packets of DNA.
Answer:
Carbon atom is responsible for this huge diversity of organic molecules.
Explanation:
Diversity of Structures:
The diversity of organic compounds originate due to following properties of Carbon atoms.
i) Catenation: It is the unique property of carbon atoms of self linkage. This property allows carbon atoms to form a long chains.
ii) Multiple Bonds: Also, the carbon atoms can form multiple bonds along with single bonds. Therefore, those organic comounds in which double or triple bonds are present are known as unsaturated compounds while, that containing single bonds are termed as saturated hydrocarbons.
iii) Isomerism: This is very important property of organic compounds in which more than one structure can appear for a same molecular formula. Hence, resulting in increasing the number of compounds for a single molecular formula.
A eukaryotic cell is classified this way if it B. contains a nucleus. In biology the definition of eukaryotic is "having a true nucleus" which is how to depict a prokaryotic cell from a eukaryotic cell.