If the chromosome is an X shape the two rods that make it up are chromatids and the center that holds them together is the centromere
Answer:
The phenotypic ratio is the distribution pattern (expressed as a ratio) of the physical characteristics in the offspring obtained after a genetic cross. So, genotypic ratio and phenotypic ratio are the two types of genetic ratios used to express the genotype and the phenotype of offspring from a genetic cross.
Explanation:
This is from biologyonline.com
A is correct
Plants contain an outer layer that animals don’t (the cell wall). Due to the existence of the rigid cell wall, plant cells don't form furrows like an animal’s cell will
Groups 3-12 are all metaloids
