Name: ______Block: ______

Name: ______Block: ______

  1. What the organism looks like for a particular gene is called its _____.
  2. Genotype
  3. Phenotype
  4. Heterozygous
  5. Homozygous
  1. BB or bb would be ______for that trait.
  2. Dominant
  3. Phenotype
  4. Heterozygous
  5. Homozygous
  1. _____ is a long molecule that has blueprints for the genes of an organism.
  2. Alleles
  3. Genotype
  4. Gene
  5. DNA
  1. Humans have ____ chromosomes, or ______pairs.
  2. 23, 46
  3. 22, 44
  4. 46, 23
  5. 50, 25
  1. A ______gene always shows up in the individual if that gene is present.
  2. Genotype
  3. Phenotype
  4. Dominant
  5. Recessive
  1. If a homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb), what is the probably that an offspring will have black fur? Black is dominant to white (Hint: draw a Punnett square if it will help)
  2. 25%
  3. 50%
  4. 75%
  5. 100%

The figure below represent two chromosomes from an animal and the table describes the traits carried on this chromosome.Use it to answer #7.

hH

BB

Chromosome #6: DadChromosome #6: Mom

Genes on Chromosome #6 / Trait
H / Long hair
h / Short hair
B / Black hair
b / White hair
  1. Which trait can that animal inherit ONLY from its mother?
  2. Long hair
  3. White hair
  4. Black hair
  5. Short hair
  6. What are the genotypes of the parents represented in this Punnett Square?

AA / Aa
Aa / aa
  1. AA ndaa
  2. AA and Aa
  3. Aa and Aa
  4. Aa and aa
  1. In humans, a trait like red hair color tends to run in families. This is because ______.
  2. Hair color is a genetic characteristic
  3. Hair colors is a physical characteristic
  4. Hair color is an environmental characteristic
  5. Particular hair colors occur by chance
  1. In an attempt to produce a potato that tastes good and also resists disease, plant breeders manipulate (control) the DNA by inserting a gene for taste into a plant that resists disease. This technique is an example of
  2. Genetic engineering
  3. Inbreeding
  4. Sexual reproduction
  5. Cloning
  1. A mutation (change to the DNA molecule) occurs in an organism’s skin cell before the organism reproduces. When the organism reproduces, how many of its children will have the mutation?
  2. All of the organism’s children will have the mutation
  3. Some of the organism’s children will have the mutation
  4. None of the organism’s children will have the mutation
  5. It will depend on how much time passes between when the mutation occurs when the organism has children.
  1. Single celled organism can reproduce and create cells exactly like themselves without combining genes from two different parent cells. When they do this, they use a type of
  2. Asexual reproduction
  3. Gamete formation
  4. Natural selection
  5. Sexual reproduction
  1. There are green algae that can reproduce sexually. Which of the following features identifies reproduction in green algae as sexual?
  2. The cells of parent algae have nuclei
  3. Each offspring contains chloroplasts
  4. Several offspring may be produced at once
  5. Genetic material is contributed by two parent cells.
  1. A piece of sponge breaks off and floats away. When the piece of sponge reaches the bottom of the ocean, it attaches to a rock and begins to grow a new sponge. What type of reproduction does this sponge demonstrate?
  2. Autotrophy
  3. Asexual
  4. Heterotrophy
  5. Sexual
  1. Which of the following is the primary advantage of sexual reproduction when compared to asexual reproduction?
  2. There is a greater number of offspring
  3. There is more food available to offspring
  4. There is a greater genetic variety in offspring
  5. There is a longer development time for offspring
  1. Animals and plants that produce sexually have an advantage over organism that reproduce asexually because _____.
  2. They can copy themselves quickly
  3. They grow faster
  4. They have a better ability to adapt due to the variety of different genes they get from both parents
  5. They are more complex because they get traits from two parents.

Using the article below answer questions # 18-20

  1. The chimpanzee behavior of poking pieces of grass into termite mounds observed by JaneGoodall is an example of
  2. Innate behavior
  3. Learned behavior
  4. Genetic anomaly
  5. Chromosomal disorder
  1. A chimpanzee’s ability to make sounds and gestures would be an example of
  2. Natural selection
  3. Selective breeding
  4. Inherited trait
  5. Learned trait
  1. Which of the following could be affected by the information in the DNA molecules of an organism such as a bird?
  1. Both the bird’s physical characteristics and its behaviors
  2. The bird’s physical characteristic but not its behaviors
  3. The bird’s behaviors but not its physical characteristics
  4. Neither the bird’s physical characteristics nor its behavior.
  1. The discovery that Gombe chimps and chimps in other communities each using objects but for different purposes would mostly likely be a result of
  2. Different genetics among the two communities
  3. Different observations made among the scientists
  4. Different learned behaviors among the two chimp communities
  5. None of the above