Vocab
The study of DNA and traits is called....
Genetics
Which trait - white flowers or purple flowers - is controlled by a dominant allele?
White Flowers
What do the circles in the pedigree represent? What do the squares represent?
Circles: Female
Squares: Male
What kind of letter shows a DOMINANT trait
Uppercase
Solid
Liquid
Gas
Plasma
This molecule carries genetic instructions for the development, functioning, growth and reproduction of all known organisms
DNA
In which generation are the parents homozygous? In which generation are they heterozygous?
Homozygous: F1
Heterozygous: F2
What does a shaded in shape mean on a pedigree?
Marks the trait of interest.
What is a trait and what is a tradition?
A trait is in our DNA a tradition is something we learn
Which Planet is closest to the sun?
Mercury
Versions of a gene are called....
In the F1 generation, what is the genotype of the offspring? What is their phenotype
White flowers
Which pairs of individuals in the pedigree have children?
C-D
F-G
H-I
Typically, how many alleles determine a trait? (the answer is a number)
2: Dominant and Recessive
What is one reason we may use genetic testing?
To see if you are a carrier for any genetic disorders
These are diagrams designed and used to determine the probability that a product will have a certain genotype.
Probability Chart / Punnett Square
How many offspring in the F2 generation have purple flowers?
1/4
Which individuals are carriers of the trait that is traced by the pedigree?
Half Shaded Shapes
C N A O
True or false: All living things have the same number of Chromosomes
False!
Humans have 23
Dogs have 39
Cats have 38
Which animal did birds evolve from?
Dinosaurs!
If both alleles are different they are called....
Heterozygous
How many F2 offspring are Homozygous?
3
Connects children to parents and parents together.
Name a genetic disorder
Cystic Fibrosis
Albansim
Down Syndrome
Ankylosing spondylitis
Angelman
Is it possible for a son to inherit an allele on an X chromosome from his father? Explain why or why not.
It is not possible because he will inherit his fathers Y chromosome, none of the genes on his fathers X chromosome will go to him