Transcript Genetics Review

Genetics
Review
What term would describe the
following genotypes:
Hh or Rr
Heterozygous
Which cell or cells are dipliod?
A
B
C
C
In mussels, the allele for brown coloring (B) is
dominant to the allele for blue coloring (b). Give
the parental genotypes that are necessary to get
50% of the offspring to be brown and 50% of the
offspring to be blue.
Bb X bb
Specifically, in which organs
does meiosis occur?
Ovaries and
testes
Garden pea plants can have yellow seeds or
green seeds. In a plant that is heterozygous
for seed color, the allele for yellow seeds
masks the allele for green seeds. What term
BEST describes the yellow allele?
Dominant
Which cell or cells are hapliod?
A
B
A and B
C
What term would describe the
following genotypes:
HH or hh
Homozygous Dominant
A male chimpanzee has 48 chromosomes in
its liver cell. How many chromosomes are in
each of his sperm cells?
24
Both a mom and dad have blood type
B, but they have a daughter with blood
type O. What are the genotypes of
both parents?
Both parents have the IB i
genotype
A partial Punnett Square is shown below.
What are the genotypes of the parents?
Gg X Gg
In certain dogs, black (B) fur is dominant
over red (b) fur. If a heterozygous black dog
and a red dog are mated, their offspring
would be expected to have ___ genotypes
and ___ phenotypes.
2 genotypes and 2 phenotypes
Give two words that describe
the mutation:
Normal DNA:
TTC
Altered DNA:
TTG
Base-pair substitution
and Missense
In a genetics laboratory, two heterozygous tall
plants are crossed. If tall is dominant over
short, what are the expected phenotypic
results?
75% tall, 25% short
The diagram below shows a disorder on
chromosome 15. What type of
chromosome mutation occurred?
Inversion
What term would describe the following:
HH, Hh, or hh
Genotype
The diagram below indicates an event
that occurs in Prophase 1. What is the
name of this event?
Crossing
Over
What term would describe the
following genotypes:
hh
or
rr
Homozygous Recessive
Mutations that occur in _____ cells are
passed on to an organism’s offspring.
Gametes (sperm / egg)
The table below shows the genotypes that result in
four different blood types in humans. What term
best describes alleles IA and IB?
Co-dominant
What is the gender of the individual
indicated in the karyotype below?
Male
In tomato plants, the allele for red fruit color (R) is
dominant to the allele for yellow fruit color (r).
The allele for round shaped fruit (F) is dominant
to the allele for pear shaped fruit (f). Two plants
that are heterozygous for both traits are cross
pollinated. What are the genotypes of each
plant?
RrFf X RrFr
Give two words that describe
the mutation:
Normal DNA: GCC
Altered DNA: TCC
Base-pair substitution
and Silent
People who are tune deaf are unable to follow
a rhythm. Scientists have evidence that tune
deafness is an inherited trait. According to the
pedigree, what is the inheritance pattern of
tune deafness?
Autosomal
dominant
The allele for tune deafness is dominant (T)
and the allele for normal is recessive (t). What
is the genotype of individual # 4?
Tt
What is the probability that individuals # 3
and # 4 will have a child that has tune
deafness?
¾ or 75%
The pedigree below shows the inheritance
of Duchene's muscular dystrophy. According
to the pedigree, what is the inheritance
pattern of Duchene’s muscular dystrophy?
Sex-linked
Several of the shaded boxes have a diagonal
line drawn through them. What is the
significance of the diagonal line?
Indicates
death of
individual
Which of these changes to
the DNA triplet 3‘ AGG 5’ will
affect the protein produced?
A.
B.
C.
D.
AGA
AGC
ATG
AGT
What are the sex chromosomes of a
normal male?
XY
Mutation C is an example of a
Insertion
The removal of one or more
nucleotides from the
original DNA sequence-
Deletion
What are the sex chromosomes of a
normal female?
XX
In the karyotype below, which set of
chromosomes displays nondisjunction?
21
The cells below are human
cells. How many chromosomes
are cell A?
A
B
23
C