Atriploid cell contains three sets of homologous chromosomes. if a cell of a diploid species that normally has 42 chromosomes per cell is triploid, this cell would be expected to have which of the following sets of chromosomes? a. 63 chromosomes in 31 1/2 pairs. b. 21 chromosome pairs and 21 unique chromosomes. c. 63 chromosomes, each with 3 sister chromatids. d. 63 chromosomes in 21 sets of 3.

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answer: b: experiments that showed that all cells are similar in how they metabolize and in their composition

explanation:

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.