1. Explain one of the physical differences between Maria and Lucy. a. Pick one trait to explain (ex: hair texture, eye color, skin color)
b. Explain how these biological twin sisters inherited that difference in traits.
Word Bank: meiosis, sperm, egg, zygote, genes or chromosomes or DNA

Glutamic acid: hydrophilic or hydrophobic? positive, negative, or neutral? valine: hydrophilic or hydrophobic? positive, negative, or neutral?

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? question 8 options: the cold balloon expands and rises. the warm balloon shrinks and sinks. the balloons rise at the same rate. both balloons are the same size. the ballons both rise. the cold ballon is larger than the warm balloon. the warm balloon expands and rises. the cold balloon shrinks and sinks.

What is used as a template during replication? a- mrna b- trna c- rrna d- dna