Genetics + DNA
How many chromosomes are in the human cell?
46 (23 pairs)
Mitosis and Meiosis are both processes of...
Cell replication
Phenotype is...
This is the characteristic that appears (e.g. blue eyes, brown eyes, red hair, blonde hair)
What shapes are Punnett squares made up of?
Squares
What’s the diameter of a basketball hoop in inches?
A) 21 inches (~ 53cm)
B) 18 inches (~ 46cm)
C) 16 inches (~ 41cm)
D) 19 inches (~ 48cm)
B) 18 inches (~ 46cm)
What is the name of the structure for a DNA strand?
Double Helix
Mitosis is a process of cell duplication where one cell divides into ______ genetically identical daughter cells.
Two
Genotype is...
This is the particular gene combination from parents (e.g. BB, Bb or bb)
The study of genetics began with observations made by Gregor Mendel.
His studies focused on what type of plant?
Pea plants
What was Beyoncé's debut single?
Crazy in Love
The study of inheritance involves a branch of science called...
Genetics
What are the 3 reasons cells need mitosis?
Growth
Repair
Asexual reproduction (duplication)
Each individual letter of a genotype is known as an...
Allele
What's the main reason to use a Punnett Square?
Predicting the possible characteristics offspring from two parents will have.
What is the largest bone in the human body?
Femur (thigh bone)
What are the letters of the 4 base pairs in DNA?
A, T, C and G
Name three phases of mitosis or meiosis
Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
What is the difference between homozygous and heterozygous?
Homozygous: Both alleles are the same e.g. BB or bb.
Heterozygous: Both alleles are different i.e Bb.
Brown eyes are coded by a dominant allele (B), blue eyes are coded by a recessive allele (b).
On the whiteboard: draw a Punnet square crossing a heterozygous parent with a homozygous recessive parent
B b
b Bb bb
b Bb bb
How many states are there in America?
50
Name 2 traits you can receive genetically and 2 traits you can acquire.
Genetic: hair colour, eye colour, foot size, height, tongue rolling ability, etc...
Acquired: music taste, accent, language spoken, hair length, dress style, etc...
Which phase of mitosis is described by:
The replicated chromosomes and their chromatids become visible.
Prophase
Purple flowers are dominant (P) in pea plants, white flowers are recessive (p).
What would the genotype for a homozygous dominant flower be?
PP
Orange fur in cats is coded by a recessive allele (r), black fur is coded by the dominant allele (R).
What is the % chance that the offspring from a homozygous dominant parent and a heterozygous parent will have orange fur?
R RR RR
r Rr Rr
0% chance for offspring to have orange fur
Which four colours make up the flag of Brazil?
Green, Blue, Yellow and White