Lecture 20 study guide Flashcards
1
Q
Outline the main differences in the products of mitosis versus meiosis.
A
mitosis produces 2 diploid cells and meiosis produces 4 haploid cells
2
Q
Compare the contrast the sequence of alleles on a duplicated chromosome versus on homologous chromosomes.
A
on a duplicated chromosome, they are identical while on homologous chromosomes they differ in base pairs
3
Q
Define crossing over
A
alleles from homologous chromosomes cross over
4
Q
Explain why there cannot be any DNA replication in between meiosis I and meiosis II.
A
the DNA comes from two different parents
5
Q
Explain how crossing over is an important source of genetic variation
A
Crossing over creates new combinations of alleles, uniting the maternal and paternal genomes.
