Intro to Meiosis

Meiosis produces sex cells, which are known as __________________

The chromosome count of sperm and eggs makes them what type of cell?

• Diploid

• Haploid

• Somatic

• Germ

Which phase of meiosis includes an increase in genetic variation (that we have discussed)?

• Prophase I

• Prophase II

• Anaphase II

• Metaphase I

The process being shown in this image is known as:

• Genetic recombination

• Prophase I

• Gametification

• Crossing over

Metaphase I differs from metaphase in mitosis in what way?

• Chromosomes align at the midpoint in metaphase, but pairs align in metaphase I

• Chromosomes align at the midpoint in metaphase I, but pairs align in metaphase

• Metaphase I leads the cells to a haploid state, while metaphase leaves it diploid

• There is no difference between these phases

Anaphase I differs from anaphase in mitosis because:

• In anaphase I, chromosomes split at the centromere, but pairs separate in anaphase

• In anaphase, chromosomes split at the centromere, but pairs separate in anaphase I

• Anaphase I makes the cells haploid, but anaphase leaves them diploid

• There is no meaningful difference

Which of the following is NOT a way meiosis differs from mitosis?

• Meiosis has 2 divisions, but mitosis has 1

• Homologous pairs form tetrads in meiosis, but not in mitosis

• Meiosis creates 4 genetically unique cells, while mitosis only makes 2 identical ones

• DNA is not duplicated after meiosis I, allowing the cell to become haploid. Mitosis keeps the cell diploid

• All of these are differences between mitosis and meiosis

Check all the points that are true regarding crossing over.

• It decreases genetic diversity

• It occurs in prophase I

• It occurs in prophase in mitosis

• It occurs in prophase II

• It increases genetic diversity

The image included is a human karyotype, or chromosome map. Each pair of chromosomes includes one from the mother, and one from the father. These pairs of chromosomes are known as:

• Tetrads

• Homologous chromosomes

• Somatic

• Sex chromosomes

An allele refers to:

• A homologous chromosome pair

• A gene

• A version of a gene

• A recombinant chromosome