Answer:
1. True
2. True
3. False, they have 46
4. False, they inherit traits from both parents
5. True
6. False, rice has 12 pairs of chromsomes and flies have 4 so not all orangisms have the same number of chromosomes
7. True (not too confident with this one though)
8. False, a body cell has 46 while gametes have 23
9. False
10. True
Explanation:
Your answer is prophase 1. These stages listed in order are prophase 1, metaphase 1, prophase 2, metaphase 2. Hoped this helped.
Answer:
Calcium
Explanation:
Parathyroid hormone (PTH) is a hormone that is secreted by the parathyroid gland. It is the major regulator of the plasma concentration of calcium ions. It regulates calcium ions in the kidney, intestine and bones.
In the kidney, is involved in the re-absorption of calcium in distal ducts and the renal collecting duct, it is also involved in activating the conversion of 25-hydroxy vitamin D into 1,25-dihydroxy vitamin D (calcitriol).
In the intestine, PTH is involved in the absorption of calcium, by increasing vitamin D production.
In the bone, it helps in regulating calcium levels; when serum calcium level is low, PTH stimulates the activity of the osteoclast, to produce more calcium.
Answer:
organism that will die off
Explanation:
because
Answer:
Homolog genes with sequence identity often exhibit differences in length associated with size variations in the intronic sequences
Explanation:
In eukaryotic organisms, genes are composed by 1- coding sequences (i.e., exons) that are transcribed into precursor mRNAs, and 2-noncoding regions (or introns), which are not transcribed but contain sequences involved in the control of gene expression
