5. Which of the following is NOT true about a recessive gene trait?
A. It is expressed when the genotype is heterozygous.
B. It can be masked by a dominant gene trait.
C. It is expressed only when a dominant gene isn't present.
D. It can be expressed when the genotype is homozygous.

A. It is expressed when the genotype is heterozygous.

Explanation:

Gene is only expressed in homozygous recessive.

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.