You could eat healthy everyday, exercise, drink at least 6 to 8 cups of water each day, get enough sleep, and try to put less stress on yourself. :)
Counter current flow is the opposite movement of water against the flow of blood in the fish's gills.
The mother's genotype can be either
or
.
For X-linked recessive traits, males (XY) can either be affected or free from the disorder, they cannot be carriers. Females (XX), on the other hand, can be affected, unaffected, or be carriers.
The circled male child is free from the disorder (
) while the females are carriers (
).
The male inherited the healthy allele,
, from the mother.
The female children inherit the affected allele from their father (who is affected for the disorder) and the other healthy allele from their mother.
This means that the mother cannot be affected for the disease. As it is, the pedigree points that all the children got their healthy alleles from their mother. This does not mean the mother has two healthy alleles though.
Thus, the possible genotype of the mother are
and
.
More on pedigrees can be found here: brainly.com/question/2952835?referrer=searchResults
Xylem are tubes in the stem that transport water and minerals upward, from the roots to the leaves. Phloem are tubes in the stem that move food made in the leaves to other parts of the plant. ... Chlorophyll is a pigment that helps plants use energy from the sun to produce sugars.