Answer:
A punnet square can be described as a diagram which depicts the outcomes of the genotype and phenotype of offsprings from a cross between parents. A cross in which a single trait is being considered is a monohybrid cross. A cross in which two traits are being studied is considered as a dihybrid cross.
The punnet square for such a cross can be made as follows:
RY RY rY rY
RY RRYY RRYY RrYY RrYy
RY RRYY RRYY RrYY RrYY
Ry RRYy RRYy RrYy RrYy
Ry RRYy RRYy RrYy RrYy
Answer: Option B.
Explanation:
The first experiment of the passage shows that treatment with TGFBR1 and TGFBR2 antagonists led to lower levels of epithelial cell production. For this conclusion to be strongly valid, we want to show a positive correlation between TGFBR activity and epithelial proliferation.
<h3><u>Answer;</u></h3>
B
<h3><u>Explanation;</u></h3>
- Smooth muscle is found in the walls of hollow organs throughout the body.
- Smooth muscle contractions are involuntary movements triggered by impulses that travel through the autonomic nervous system to the smooth muscle tissue.
- <u>The smooth muscle of the alimentary canal or the digestive tract facilitates the peristaltic waves that move swallowed food and nutrients.</u>
