I’m pretty sure it’s the second one and the fourth one !
Answer: The given statement is True.
Gene can be described as the segment of DNA ( deoxyribonucleic acid), which codes for a particular protein. The protein thus formed, corresponds to a specific trait ( such as skin color, hair color, color of eye) of the individual organism.
They possess set of instructions for making a protein in the form of nucleotide sequences. Gene undergo transcription to form mRNA ( messenger RNA), which is then converted into particular protein through translation.
Genes are inherited from parents by their offspring and in this way specific traits are inherited by offspring from their parents.
Thus, given statement in the question is correct.
halogens are the most reactive nonmetals.
Answer:
The idea of concentrations and gradients within them is important when understanding the movement of substances across cell membranes. The more particles there are in a certain volume, the more concentrated those particles are. A solution with a low solute concentration has a high water concentration, and a high water potential.
On his visit to the Galapagos Islands, Charles Darwin discovered several species of finches that varied from island to island, which helped him to develop his theory of natural selection. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".
Hope this helps! ;)