Genetics test review

A cell's chromosomes contain

• Genes
• Chlorophyll
• Sperm
• Egg cells

Two new sea stars can be produced by dividing one sea star in half.
Which type of reproduction is describe above?

• Sexual
• Cloning
• Asexual
• External

Which natural process results in offspring that are genetically identical to the parent?

• Complete metamorphosis
• Sexual reproduction
• Incomplete metamorphosis
• Asexual reproduction

Which of the following is an example of selective breeding?

• Cutting a stem from a plant so that a new plant grows from the stem.
• Taking a skin cell from a sheep and making an exact clone of the sheep.
• Replacing the DNA of a plant with DNA that allows the plant to grow in little water.
• Selecting 2 horses and having them mate in order to produce stronger offspring

Many plants reproduce asexually. How does the genetic material or DNA compare between the new plant and the parent plant in this type of reproduction?

• It is similar but not identical.
• It depends on the plant the parent is crossed with.
• It depends on the climate it is grown in.
• It is identical.

This list describes examples of reproduction for several organisms:
Butterflies lay eggs
Whales give birth to live young
A single-celled euglena splits into 2 cells
A single-celled amoeba produces young that are identical to the parent
Which organisms described on the list reproduce sexually?

• Euglena and whales
• Butterflies and whales
• Euglena and Amoeba
• Butterflies and amoeba

During which process does genetic material come from two parents?

• Asexual reproduction
• Photosynthesis
• Respiration
• Sexual reproduction

Emily has brown hair.

Which most likely explains why Emily has brown hair?

• Emily’s favorite color is brown.

• Emily has a parent with brown hair.

• Emily’s older brother has brown hair.

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit traits from only one parent.

• Offspring inherit traits from both parents.

• Parents choose which traits to pass on to their offspring.

__________ is genetic material on chromosomes organized into a double helix.

• Genotype
• DNA
• Genetics
• Monohybrid