Which of the following is an example of polygenic inheritance? a. white and purple flower color in peas b. the abo blood groups in humans c. skin pigmentation in humans d. pink flowers in snapdragons e. huntington's disease in humans

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Skin Pigmentation in humans

Explanation: Polygenic inheritance- It is simply a single characteristic which is controlled by more than two genes. Human skin's color is determined by the amount of dark pigment it has which is melanin . Minimum four genes are involved in the melanin production.

It is a case of continuous variation as the combination of melanin producing allele are responsible for degree of pigmentation

i think the answer is b.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.