Meiosis & Fertilization
What type of cell division creates gametes?
What is meiosis?
A change in DNA is called a ___.
What is mutation?
In Mendelian inheritance, the allele that masks another is called _____.
What is dominant?
Traits controlled by many genes are called ____ traits.
What are polygenic traits?
What technique separates DNA fragments by size?
What is gel electrophoresis?
How many chromosomes do human gametes have?
What is 23 (haploid)?
New combinations of alleles during meiosis occur because of crossing over and ____.
What is independent assortment?
Red flower x white flower= pink flower. This is _____ dominance
What is incomplete dominance?
Polygenic traits usually show what pattern in a population graph?
What is a bell curve or continuous variation?
A DNA profile with matching band patterns can be used to determine what?
What is identity or relatedness?
What event during meiosis I increases genetic variation?
What is crossing over?
Give one environmental factor that can cause mutations.
What is UV radiation, chemical, X-rays, etc.?
A spotted cow (roan) results from both alleles being expressed. This is _____.
Give one example of a polygenic trait in humans.
What is height, skin color, eye color, etc.?
What is edit or cut specific sequences?
During fertilization, two haploid gametes form a diploid cell called a ___.
What is a zygote?
When a DNA polymerase makes a mistake during S phase, this is an example of what type of mutation cause?
What is replication error?
Blood type is an example of what inheritance pattern?
What are multiple alleles (and co-dominance)?
Name one environmental factor that can influence gene expression of traits.
What is sunlight, nutrition, temperature, chemicals, etc.?
A GMO crop that produces its own pest resistance is an example of biotechnology used in ____.
What is agriculture?
Explain how meiosis and fertilization work together to ensure offspring have the correct chromosome number.
Meiosis halves the number and fertilization restores it.
Explain how sexual reproduction increases genetic diversity more than asexual reproduction.
What is combining genes from two parents & recombination events?
A child inherits colorblindness from which parent, and why?
What is the mother, because it is X-linked recessive?
What is environment interacts with genes to influence traits?
Summarize one ethical concern about modern biotechnology.
answers may vary.