PLEASE HELP ASAP! Thank you. What causes variety in an offspring's genes that have the same parents during the cell cycle process? Metaphase

Anaphase

Crossing over

DNA duplication

Which of these is a major trend in land plant evolution? a) the trend toward smaller size b) the trend toward a gametophyte-dominated life cycle c) the trend toward a sporophyte-dominated life cycle d) the trend toward larger gametophytes

Which of the following cell structures is significantly different between gram- positive and gram-negative bacteria?

Some substances but not other can cross the (blank) membrane of a cell