Genetics
Provide an example of a heterozygous trait.
Hh, Nn, Mm, Gg, Sw, etc.
Heterozygous- two different alleles in the genotype.
Offspring has an exact replication of 1 parents DNA.
Asexual Reproduction
IF a homozygous recessive parent crosses with another homozygous recessive parent. What percentage of the offspring would have a dominant trait?
0%
_______ is the variety of gene combinations that exist within a population.
A. Genetics
B. Gene
C. Genetic Variation
C. Genetic Variation
Charles Darwin studied what species of birds? This was an example of _________________.
Natural selection or adaptation
Provide an example of a homozygous recessive trait.
mm, bb, vv, dd, etc.
Homozygous is when the same alleles are in the genotyope and recessive is a lowercase letter.
Offspring will vary and receive a mix of 50% of one parents DNA and 50% of the others DNA.
Sexual Reproduction
If a homozygous dominant parent crosses with a heterozygous dominant parent. What percentage of the offspring would have the dominant trait?
100%
A version of a genetic trait.
A. DNA
B. Allele
C. Chromosome
B. Allele
Budding is an example of what type of reproduction?
Asexual
_____ is located inside the DNA and regulates gene expression.
A. Nucleus B. Protein C. Cell
B. Protein
What would be a benefit to asexual reproduction?
Requires less energy, rapid population growth or does not require a mate
If 2 heterozygous parents cross, what percentage of the offspring would be dominant and what percentage would be recessive?
75% dominant and 25% recessive
A sequence of DNA that is passed from parent to child.
A. Trait
B. Allele
C. DNA
D. Gene
D. Gene
What is an adaptation, and provide a real life example.
A genetic characteristic's that allows an organism to survive and reproduce. Giraffe adapted over time to have long necks in order to reach foliage on high trees.
When humans select desirable traits for future generations, this is known as _______________.
Artificial selection
What is a benefit of sexual reproduction?
What is a harm of sexual reproduction?
Benefit: Adaptability, genetic variation, stable in changing environments, or reduction of disease
Harm: requires a mate, slower reproduction, requires more energy
Create a punnett square for the following scenario: A male guinea pig is speckle (homozygous recessive) and a female guinea pig is black (heterozygous dominant).
s s
B Bs Bs
s ss ss
______ is what you actually see or observe based on the allele and _____ is the genetic coding or sequence in the DNA of the allele.
Phenotype and Genotype
What is a change or a damage in the DNA gene that permanently alters the genetic message, changing the protein?
Mutation
Genetics that are more favorable get passed down to future generations as the environment changes, this is known as ___________.
Natural selection
Provide an example of an organism that reproduces asexually and sexually.
Asexual- starfish
Sexual- Human
Draw a punnett square that proves two short finned sharks can have a long finned baby shark. Short fin is dominant to long fin.
S s
S SS Ss
s Ss ss
Two heterozygous parents!
_______ is a trait that is expressed when at least one allele is present and _____ is a trait that is expressed when BOTH alleles are present.
Dominant and Recessive
Provide an example of a harmful mutation.
Allegators can have a mutation that makes their skin pigment white all over, this is know as being albino. The allegators can no longer camouflage and are easily seen by their prey.