Reproduction
How can you tell if an offspring is from sexual or asexual reproduction?
Sexual Reproduction will create an offspring with a mixture of traits from mom and dad (genetic variation) Asexual Reproduction will create and offspring identical to the parent.
How do you show a dominant allele? Write an example.
A capital letter. Example "G"
Use this information to answer the following question:
BB - Brown eyes
Bb - Brown Eyes
bb - Blue Eyes
What color eyes do both parents have if the offspring's genotype is BB? Create a punnett square to support your answer.
Both parents would both have brown eyes.
Give an example of a homozygous recessive genotype.
Two lower case alleles. Example: "aa"
Using the following definition, give the vocabulary term it describes.
Definition: Product of reproduction; a new organism produced by one or more parents.
Answer: Offspring
What are two characteristics of sexual reproduction?
Answers may include:
2 parents, gametes required, longer process, offspring with genetic variation
How do you show a recessive allele?
A lower case letter. Example "g"
If a "BB" male rabbit with black fur and "bb" female rabbit with white fur breed, what is the percent chance of having an offspring with with white fur? Create a punnett square to support your answer.
0% chance
T - tall plant t - short plant
Based on the information about, what would the phenotype of a homozygous recessive plant be?
Answer: Short plant
Using the following definition, give the vocabulary term it describes.
Definition: A characteristic that is passed from parent to offspring.
Answer: Trait
What are two characteristics of asexual reproduction?
Answers may include:
1 parent, no gametes, offspring is a genetic clone of the parent, more rapid process
What is a genotype example for heterozygous?
Answers may vary but should be represented by one upper case letter and one lower case letter.
Example: "Gg"
What is the genotype of a brown-eyed father if he has a blue-eyed child? Create a punnett square to support your answer.
The father has to be heterozygous, "Bb" so that he has the possibility of passing on the recessive allele to his child.
If green is dominant to yellow, what genotypes would result in a green phenotype? Use the letter G.
Answer: GG or Gg
Using the following definition, give the vocabulary term it describes.
Definition: The inherited characteristic that is expressed only when no dominant allele is present.
Answer: Recessive
Draw a model of an offspring from asexual reproduction. Make sure to include the parent(s) and offspring.
Answers will vary but offspring should be identical to the one parent.
Using the following examples, write down if they would result in the offspring having the dominant or recessive trait. Make sure to write the example with your answers.
AA
Aa
aa
AA - dominant trait
Aa - dominant trait
aa - recessive trait
Can two Bb rabbits with black fur have a white offspring? What percent chance do they have? Create a punnett square to support your answer.
There is a 25% chance they could have an offspring with white fur.
List the possible phenotypes for children of a brown-eyed father (BB) and blue-eyed mother (bb). Create a punnett square to support your answer.
Answer: brown eyes
Using the following definition, give the vocabulary term it describes.
Definition: The process of passing on characteristics to later generations of a species through genes.
Answer: Inheritance
Draw a model of an offspring from sexual reproduction. Make sure to include the parent(s) and offspring.
Answers will vary, but there should be 2 parents and the offspring should be a mix of traits of both parents.
Explain what a purebred genotype is and give an example of one.
A purebred genotype is an homozygous genotype. It is considered purebred because both alleles are identical for a specific trait. Examples would include: "GG" or "gg"
If B = Black fur and b = white fur
Can a homozygous dominant and a homozygous recessive rabbit produce a white offspring? Use a ratio to show your answer. Create a punnett square to support your answer.
No they can't. The father cannot pass on the recessive allele making it impossible for him to have an offspring with white fur.
Ratio 4 black fur : 0 white fur
If green (G) is dominant to yellow (g), list the genotypes and phenotypes created in a cross between a heterozygous parent and a homozygous recessive parent? Draw a punnett square to support your answer.
Answer: Gg - Green or gg - yellow
Using the following definition, give the vocabulary term it describes.
Definition: The occurrence of an organism, trait, or gene in more than one form.
Answer: Variation