Answer:
sexual chromosome linked characteristics
Explanation:
The sexual crhomosomes are XX (for females) and XY (for males).
The Y chromosome have less genes than the x, because of this, some characteristics are expressed at males and not at females.
Males has only one copy of the gen, carried by the only X chromosome (in this case, the leght of the tail). Nevertheless the females have two copies of the gen, (short and long tail).
So, the fenotype resulting is a dominant characterisitic related to x chomosome (long tail).
The correct answer is B.chloroplasts.
Chloroplasts are plant’s organelles so they cannot be found in a cell from fingernail. The function of chloroplasts is to convert light energy of the Sun into glucose that can be used by cells and this is possible thanks to chlorophyll found in chloroplast . The entire process is called photosynthesis.
Complete question:
True or False: The reason that the nail bed appears pink is the presence of a larger number of melanocytes in the underlying dermis.
Answer:
False
Explanation:
Nails are composed of the lamina, which is a smooth, shiny, translucent, and keratinized structure. The nails are born the nail matrix. The newly formed nail slice along the mail bed, which is the plane surface under the nails.
The nail bed places under the nail and is composed of a thin epithelium, with no granulous stratum, and a few layers of parakeratotic cells attached to the nail.
The nail matrix and nail bed have melanocytes. Half of the melanocytes of the matrix produce melanin, while melanocytes of the nail bed are inactive.
The nail bed is laying over many small vessels that nourish it and provides a pink color to the nails.
A, turning on gene expression
