Answer: The frequency of brown beetles is 0.32.
Explanation: The frequency of A1 allele is 0.8. As p+q=1, or the sum of dominant and recessive frequencies equals 1 or 100%:
1 - 0.8 = 0.2
In Hardy-Weinberg principle,

2pq represents the frequency of heterozygote individuals, so:
genotype A1A2 = 2*0.8*0.2 = 0.32.
Thus, the frequency of brown beetles (A1A2) in the population is 0.32.
All animals are heterotrophs as in they can't produce their own energy like plants can which is why they are autotrophs. Herbivores eat plants, carnivores eat animals, and omnivores (humans) eat both.
The major components of the lymphatic system include lymph, lymphatic vessels, and lymphatic organs that contain lymphoid tissues.
A Cuticle, because a cuticle is waxy and it repels water and covers outside of a plant. Unlike a seed, phloem, ad xylem. If you think about your nails wouldn't you think cuticle as well?
Answer:
nucleic acids
Explanation:
Nucleic acids are the polymers of nucleotides. There are two types of nucleic acid: DNA and RNA. DNA is a polymer of deoxyribonucleotide while RNA is a polymer of ribonucleotides. The nucleotides are added together with the help of phosphodiester bonds.
Each nucleotide has a nitrogenous base, a pentose sugar and a phosphate molecule.