WorksheetsCrossing Over
Total questions: 6
Worksheet time: 4mins
The diagram below represents a change that occurred in a pair of chromosomes during the formation of an egg cell. The alteration that occurred will most likely be passed on to every cell that develops from the egg cell. Why would this type of alteration result in offspring with combinations of traits that differ from those found in either parent?
It converts sex cells into body cells.
It results in the formation of diploid gametes.
. It results in new combinations of genes on each chromosome.
It changes the chromosome number of the body cells that develop from the egg cell.
The diagram shows the process of crossing over. Which claim about crossing over in chromosomes is best supported by the diagram?
Crossing over increases genetic diversity through deletion.
Crossing over decreases genetic diversity through mutation.
Crossing over increases genetic diversity by creating new combinations of genes.
Crossing over decreases genetic diversity by inserting nucleotides into gene sequences.
The process of "crossing over" occurs in what phase of meiosis?
anaphase 1
prophase 1
prophase 2
telophase 2
The diagram shows homologous chromosomes during prophase I of meiosis. Which of the following correctly describes the process being illustrated?
Segregation of sister chromatids
Mutation in which the DNA content of the gene is altered
Crossing over in which alleles are exchanged
Condensation and segregation of alleles
