Answer:
Carbohydrates. The digestion of carbohydrates begins in the mouth. The salivary enzyme amylase begins the breakdown of food starches into maltose, a disaccharide.
Explanation:
Certain people can have allergies or be diabetic
Answer:
Stratum basale layer of epidermis produces melanin pigment.
Explanation:
The epidermis is composed of mainly four layers. In some areas like palm and foot, they contain five layers - stratum granulosum. All the layers are avascular i.e. lack of blood vessels.
The stratum basale cell is the deep layer of the epidermis. It is a single layer made of basal cells. The basal layer produces the keratinocytes. The keratinocytes divide mitotically and migrate to the upper layers. The keratinocytes provide hardness to the nail and skin, also make the skin waterproof.
Another two types of cells are present in the stratum basale - Merkel cell and melanocyte cell. Merkel cells provide sensory stimulation to the skin. Melanocyte cell produces pigment melanin.
Melanocyte gives color to skin, hair. It spreads from stratum basale to the upper layer of the skin called stratum corneum. Melanin pigment protects the skin from the ultraviolet radiation of the sun.
To obtain oxygen.............
Which mode of inheritance produces heterozygotes with phenotypes that differ from either homozygote but typically more closely resembles one homozygous phenotype than the other?"
A) complete dominance
B) incomplete dominance
C) codominance
D) epistasis
E) incomplete penetrance
Answer:
B) incomplete dominance
Explanation:
Incomplete dominance occurs when the dominant allele of a gene is not able to mask the expression of the recessive allele completely. This results in the expression of a phenotype in the heterozygous genotypes that differ from both homozygous genotypes. However, the phenotype of the heterozygote is closer to one of the homozygous genotypes.
For example, the petal color in four o'clock plant is controlled by a gene with two alleles R and r. Here, the "R" allele can not produce enough pigment in heterozygous conditions to completely mask the expression of the "r" allele and the phenotype of the "Rr" plant is "pink". On the other hand, the phenotype of "RR" plant is red while that of the "rr" plant is "white".