The 8 most common elements in Earth’s crust are:
46.6% Oxygen (O)
27.7% Silicon (Si)
8.1% Aluminum (Al)
5.0% Iron (Fe)
3.6% Calcium (Ca)
2.8% Sodium (Na)
2.6% Potassium (K)
<span>2.1% Magnesium (Mg)
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Answer:
- G1: One copy of the B allele per cell
- G2: Two copies of the B allele per cell
- metaphase of mitosis: Two copies of the B allele per cell
- metaphase I of meiosis: Two copies of the B allele per cell
- metaphase II of meiosis: One copy of the B allele per cell
- second cytokinesis following meiosis: One copy of the B allele in only two of the four daughter cells.
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
Answer:
Low,high
Explanation:
Thyroxine is a complex organic compound containing iodine. Thyroxine concentration in the body is kept to the required levels through a negative feedback mechanism. The production of thyroid stimulating hormone is regulated by thyroxine. An increase in thyroxine inhibits the pituitary gland which responds by secreting less thyrotropic hormone. This in turn reduces the activity of thyroid gland leading to a drop in thyroxine production. A low thyroxine level removes the inhibitory influence on the pituitary so that more thyroid stimulating hormone is produced.
Answer:
Answer: causing degradation of transcription factors and changing which genes are expressed
Explanation:
They are plants without a vascular system
