Answer:
Double Helical Spiral structure
Explanation:
DNA is a helical spiral structure in which two long strands of nucleotide form a double helix structure.
It looks like a structure of ladder in which the phosphate and sugar molecules from the side of the ladder and the base pairs form the rungs.
Red-flowered snapdragon have a homozygous genotype rr (both alleles are the same)
White-flowered snapdragon have a homozygous genotype r'r'
Gamet for the red-flowered snapdragon is r
Gamet for the white-flowered snapdragon is r'.
<span>F1 generation will have all heterozygous genotypes rr’.</span>
Answer:
Direct contact.
Explanation:
Since it was spread through facial tissue, physical contact is needed.
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Answer:
Pancreas secrets two hormones called insulin and glucagon which helps in maintaining the glucose level in the blood.
Explanation:
Pancreas secrets a hormone called as insulin, which helps the cell in absorbing the glucose by reducing the blood sugar and providing glucose for energy. On falling of the sugar level pancreas releases a hormone called glucagon. This glucagon informs the pancreas about the presence of low sugar in blood, after which it releases the stored glucose, and helps in raising the blood sugar level. Alpha cell of pancreas produces glucagon.