Unit 2 Reproduction & Heredity

2 parents each contribute a sex cell to a new organism; half of the genes in the offspring come from each parent, so offspring are NOT identical to parent

• sexual reproduction

• asexual reproduction

• fertilization

• none of the above

Cells divide in ALL organisms for different reasons, including:

• reproduction

• development

• growth & repair

• none of the above

Only 1 parent is involved in creating offspring; this typically occurs in unicellular organisms.

• sexual reproduction

• asexual reproduction

• fertilization

• mitosis

____ is the genetic material, which contains the info that determines the traits that a living thing inherits & needs to live. It is found in the nucleus of eukaryotes

• sperm

• egg

• DNA

• zygote

The complex material where DNA exists w/proteins is known as _____.

• chromosomes

• DNA

• centromeres

• chromatin

Chromatin during early stages of cell division when it is compacted & becomes ______, which are a pair of 2 strands of chromatids joined by a centromere.

• DNA

• chromosomes

• sperm

• egg

Two identical structures that pair together to become chromosomes are known as chromatids.

• TRUE

• FALSE

A centromere is the middle piece that holds 2 chromosomes together to form a chromatid.

• TRUE

• FALSE

A cell cycle is the life cycle of a eukaryotic cell, which is divided into 3 phases:______, ______, & ______.

• interphase

• metaphase

• mitosis

• cytokinesis

When the cell goes through normal life activities & prepares the cell for division by copying DNA is ______.

• cytokinesis

• mitosis

• interphase