Transcript Whiteboard Review

Whiteboard Review
Sections 11.1, 11.2 and 11.4
______ is the field of biology
developed to understanding how
characteristics are transmitted
from parent to offspring.
GENETICS is the field of biology
developed to understanding how
characteristics are transmitted
from parent to offspring.
What was the name of the scientist
who was the ‘father of genetics’?
What was the name of the scientist
who was the ‘father of genetics’?
MENDEL
What is the difference between
dominant and recessive genes?
What is the difference between
dominant and recessive genes?
Dominant genes mask recessive
genes. Dominant capital letter.
Recessive lower case letter.
State at least 2 similarities
between mitosis and meiosis.
State at least 2 similarities
between mitosis and meiosis.
Both begin with diploid cells.
Both come after interphase.
Both are examples of cell division.
Both go through PMAT at least
once.
State at least 2 differences
between mitosis and meiosis.
State at least 2 differences
between mitosis and meiosis.
Mitosis makes 2 cells while meiosis
makes 4.
Mitosis cells are genetically
identical while meiosis cells are
genetically unique.
Mitosis cells are diploid while
meiosis cells are haploid.
During what process does the law
of segregation take place and
define the law of segregation?
During what process does the law
of segregation take place and
define the law of segregation?
Prophase I in meiosis – process is
crossing-over.
What does the law of independent
assortment state?
What does the law of independent
assortment state?
How one chromosome moves
during anaphase does not affect
the movement of the other
chromosomes.
Each of several alternative forms of
a gene is called a(n) ______.
Each of several alternative forms of
a gene is called a(n) ALLELE.
What is the genotypic ratio for the
monohybrid cross below?
What is the genotypic ratio for the
monohybrid cross below?
1 TT: 2 Tt: 1 tt
Brown eyes dominates over blue
eyes. If your sister is homozygous
for brown eye color, what is your
sister’s genotype? Use the letter E
for eye color.
Brown eyes dominates over blue
eyes. If your sister is homozygous
for brown eye color, what is your
sister’s genotype? Use the letter E
for eye color. EE
Albinism is a recessive trait. If you
are an albino, what is your
genotype? Use the letter A in this
problem.
Albinism is a recessive trait. If you
are an albino, what is your
genotype? Use the letter A in this
problem. aa
If curly hair is dominant to straight
hair, then what genotype must
both parents have in order to have
kids with a 50% of having curly hair
and with a 50% chance of having
straight hair? Use the letter T for
type of hair. Complete a punnett
square.
If curly hair is dominant to straight
hair, then what genotype must both
parents have in order to have kids with
a 50% of having curly hair and with a
50% chance of having straight hair?
Use the letter T for type of hair.
Complete a punnett square. Parents
have to be Tt and tt. – heterozygous
and homozygous recessive.
In some radishes, red color is
dominant over purple color. If two
heterozygous parents are crossed, and
if 200 offspring are produced from
their seeds, how many offspring out of
200 should have the purple color? Use
the letter R for radish color.
A. What is the genotypic ratio of the
offspring?
B. What is the phenotypic ratio?
In some radishes, red color is dominant
over purple color. If two heterozygous
parents are crossed, and if 200 offspring
are produced from their seeds, how many
offspring out of 200 should have the purple
color? Use the letter R for radish color. 50
will be purple.
A. What is the genotypic ratio of the
offspring? 1 RR: 2 Rr: 1 rr
B. What is the phenotypic ratio?
3 red: 1 purple
Stop here
In horses, black is dominant over
brown. If a purebred dominant is
crossed with a hybrid, what
percent of the offspring produced
will be hybrid? Use the letter B for
horse color. Complete a punnett
square.
In horses, black is dominant over
brown. If a purebred dominant is
crossed with a hybrid, what
percent of the offspring produced
will be hybrid? Use the letter B for
horse color. Complete a punnett
square. 50% will be hybrid (Bb)
Genetic make-up of an organism is
a(n) _______.
Genetic make-up of an organism is
a(n) GENOTYPE.
How are probability and genetics
related?
How are probability and genetics
related?
A punnett square is only the
probable genotypes of offspring,
not the exact outcome.