C)
The difference between allele A and allele S is due to changes in the environment.
Answer:
Water volume remains the same.
Explanation:
Ice formation is a phase change from liquid to solid. The ice is less dense so its volume gets larger. Warm it up, melt the ice and it will return to the same volume it had as a liquid.
Answer:
Crossing over
Explanation:
Crossing over is the process during which two chromatids of two homologous chromosomes exchange part of their genetic segments. It occurs during the pachytene stage of prophase I of meiosis I.
Linked genes are mostly inherited together and do not exhibit independent assortment. However, when linked genes are present far apart from each other on the same chromosome, crossing over can occur between them to produce recombinant chromatids. Therefore, crossing over can break the linkage and produce recombinant progeny as it occurs during the independent assortment of unlinked genes.
The large vacuole stores water and other materials for a plant cell
Answer:
C
Explanation:
The cell wall in only present in plant cells, not animal cells. Hence, the fact that plant cells are rectangular while animal cells are more circular.
