Answer:
They form crystals.
They have higher enthalpies of fusion and vaporization than molecular compounds.
They are hard.
They are brittle.
Explanation:
Answer:
cell walls and chloroplasts
The correct option is 3). 0.5. Since recessive homozygous are 25% of the total individuals, we could assume that their parents genotype was heterozygous. Only a double heterozygous cross (that is Aa -male- <> Aa -female) could produce the observed (25%) homozygous proportion. Following this assumption, the heterozygous proportion will be 50%.