Tonality refers to the dominance of a single color or the visual importance of a hue that seems to pervade the whole color structure despite the presence of other colors.
<u>Explanation:</u>
Tonality means different tones of color used in the picture. It shows the appearance of an image. There are several tones used in a picture but Dominating tone is only one. Tonality is very important in the case of photography.
Tonality is a combination of various tones used in painting. It refers to a color scheme. The Analogous color scheme can produce a dominance tonality.
Answer:
a. It is present at high concentration at the anterior end and low concentration at the posterior end.
Explanation:
One of the ways to define the anterior-posterior axis in Drosophila is by the products of the Bicoid and Nanos genes. The mRNA from the bicoid gene is transcribed by nurse cells. The bicoid mRNA is deposited in the unfertilized egg near its anterior pole. Therefore, the bicoid gene product serves as the anterior morphogen. The bicoid mRNA is translated after fertilization. The Bicoid proteins are present in higher concentrations at the anterior end and diffuse through the cell to create a concentration gradient from the anterior to the posterior end.