BIOL-1308 Lecture Exam #4 Chap 12 & 13
A person with Super Female Syndrome usually has a lot of reproductive problems. True False
False
An Allele which masks the expression of another Allele is referred to as a recessive Allele. True False
False
For a pair of Homologous Chromosomes, Alleles of a Gene reside at the same position. Heterozygous individuals have the same allele on each Homologue. True False
False
Individuals may have chromosome segment duplications but never have a loss of some segments. True False
False
Individuals never have chromosome segment duplications but may have a loss of some segments. True False
False
The transfer of Pollen between two different plants by dusting the Carpels of one with the Pollen of another is termed Self-Fertilization. True False
False
There are no Sex Chromosome disorders in Animals. True False
False
A person with Super Female Syndrome may (or may not) have developmental delays and learning disabilities. True False
True
A recessive Allele is one whose effect is masked if a Dominant Allele is also present. True False
True
An organism with two different Alleles for a single Trait is said to be Heterozygous for that Trait. True False
True
For the traits that the "Father" of Modern Genetics studied in the organism he chose, each trait, is expressed in only the Dominant or recessive form, depending on the Genotype. True False
True
One category of chromosomal disorder is an abnormality in chromosome number. True False
True
Recessive Disorders are mostly caused by recessive Alleles and vary in the severity of the expressed trait. True False
True
The Parental organisms of a Genetic Cross are called the P Generation. True False
True
The genetic makeup of an organism constitutes its Genotype. True False
True
The region of a Chromosome where an Allele occurs is called its' Locus. True False
True
Two categories of chromosomal disorders are abnormalities of chromosome number and chromosomal structural rearrangements. True False
True
Down Syndrome is having one extra Chromosome in the _______ "pair" of an individual. a. 21st b. 23rd c. 1st d. 2nd e. 20th
a. 21st
The _______________ states that Chromosomes are the genetic material responsible for Mendelian inheritance. a. Chromosomal Theory of Inheritance b. Theory of Chromosome Genetics c. Theory of Genetic Inheritance d. Chromosomal Theory of Inteligence
a. Chromosomal Theory of Inheritance
All of the offspring from a cross between a Black-eyed organism and an Orange-eyed organism have Black eyes. This means that the Allele for Black eyes is ________ the Allele for Orange eyes. a. Dominant to b. Codominant to c. recessive to
a. Dominant to
How could you determine the probability of an offspring having a genetic disease if you know the Genotype of the Parents? a. Draw a Punnett square. b. Flip a coin.
a. Draw a Punnett square.
In the Study of Genetics, the offspring of the P Generation is referred to as the ______ Generation. a. F1 b. P1 c. F2 d. P2
a. F1
Why did the "Father" of Genetics snip off the male sexual part of some of the flowers in his garden plants? a. He wanted to control Fertilization in order to be sure which traits were being crossed. b. He wanted to control Meiosis. c. He was cruel to plants. d. He wanted to observe natural Fertilization.
a. He wanted to control Fertilization in order to be sure which traits were being crossed.
If the two Alleles for a particular Gene ARE NOT identical (such as Tt), the Gene pair is _______. a. Heterozygous b. Homozygous c. Dominant d. recessive
a. Heterozygous
A chart showing the order of chromosomes #1-23 is called a(n) ___________. a. Karyogram b. Chromosomal Chart c. Karaoke d. Karyotype e. Kandygram
a. Karyogram
_____________ is the failure of Chromosomes to separate from each other during gamete formation during Meiosis I or II. a. Nondisjunction b. Nonfunctional c. Disjunction d. Nonconjunction e. Conjunction Junction
a. Nondisjunction
If you cross two Rose plants, one with Red Roses and the other with Pink Roses, and you find all of the offspring have Pink Roses. You conclude that _________. a. Pink is Dominant over red b. Pink and Red are Codominant c. color is random in Rose plants d. Red is Dominant over Pink
a. Pink is Dominant over red
Which Gametes can a RrYy plant produce? a. RY, Ry, rY, or ry b. RrYy c. Rr or Yy d. R or r e. RY or ry
a. RY, Ry, rY, or ry
A person with Klinefelter's Syndrome has ______. a. a high incidence of mental deficiency b. a low incidence of mental deficiency c. no incidence of mental deficiency d. an average incidence of mental deficiency
a. a high incidence of mental deficiency
If you grow Rose plants in a lab, and cross short (tt) Rose plants with short (tt) Rose plants, the offspring will most likely be __________. a. all short b. not able to reproduce c. a mix of short and tall d. all tall
a. all short
A person with Klinefelter's Syndrome has ______. a. enlarged breasts b. average size breasts c. abnormally small breasts d. no breasts (they are missing)
a. enlarged breasts
A person with Klinefelter's Syndrome externally resembles a ___________. a. male b. anamale c. female d. shemale
a. male
Which one of the following statements regarding Genotypes and Phenotypes is false? a. The expressed physical traits of an organism are called its Phenotype. b. An organism with two different Alleles for a single trait is said to be Homozygous for that trait. c. Alleles are alternate forms of a gene. d. The genetic makeup of an organism constitutes its Genotype.
b. An organism with two different Alleles for a single trait is said to be Homozygous for that trait.
If the two Alleles for a particular Gene are identical or the same, the Gene pair is ____. a. Heterozygous b. Homozygous c. Dominant d. recessive
b. Homozygous
Chromosome pair #23 are called the __________ and determine the sex of the individual (male or female) along with many other non-sexual traits. a. Autosomes b. Sex Chromosomes c. Mutant Chromosomes d. XY Chromosomes e. Regular Chromosomes
b. Sex Chromosomes
A person with Turner's Syndrome is ___________. a. Sterile and their reproductive organs are normal b. Sterile and their reproductive organs are juvenile c. Fertile and their reproductive organs are normal d. Fertile and their reproductive organs are juvenile
b. Sterile and their reproductive organs are juvenile
If you were to cross Tall (Tt) Rose plants with Tall (Tt) Rose plants, the offspring will most likely be ________. a. all Tall b. a mix of short and Tall c. not able to reproduce d. all short
b. a mix of short and Tall
Cri-du-chat Syndrome occurs when a portion of Chromosome #5 is_________. a. duplicated b. deleted
b. deleted
A person with Super Male Syndrome, has ___ Chromosome(s). a. 45 b. 2 c. 47 d. 46 e. 1
c. 47
What are the Non-sex Human Chromosomes (pairs #1-22) called? a. recessive Chromosomes b. Sex Chromosomes c. Autosomes d. Dominant Chromosomes
c. Autosomes
Which two scientists rediscovered Mendel's work which led to the theory that chromosomes are the genetic material responsible for inheritance? a. Di Vinci and Aristotle b. Darwin and Wallace c. Boveri and Sutton d. Lyell and Hutton
c. Boveri and Sutton
The "Father" of Genetics observed that some genetic traits seemed to mask other traits, and he used the term ___ to describe these traits. a. Heterozygous b. recessive c. Dominant d. Homozygous
c. Dominant
The individual features of all organisms are the result of _________. a.the Environment only b. the Environment and Individual Needs c. Genetics and the Environment d. Genetics only
c. Genetics and the Environment
Which one of the following statements best explains why Dominant Alleles that cause lethal disorders are less common than recessive Alleles that cause lethal disorders? a. The presence of a lethal Dominant Allele causes Sterility (the inability to reproduce). b. Lethal disorders caused by Dominant Alleles are usually more severe than lethal disorders caused by recessive Alleles. c. Most individuals carrying a lethal Dominant Allele have the disorder and die before they reproduce, whereas individuals carrying a lethal recessive Allele are more likely to be healthy and reproduce.
c. Most individuals carrying a lethal Dominant Allele have the disorder and die before they reproduce, whereas individuals carrying a lethal recessive Allele are more likely to be healthy and reproduce.
A Testcross is __________. a. a mating between an individual of unknown Genotype and an individual Heterozygous for the trait of interest b. a mating between two individuals Heterozygous for the trait of interest c. a mating between an individual of unknown Genotype and an individual Homozygous recessive for the trait of interest d. a mating between two individuals of unknown Genotype
c. a mating between an individual of unknown Genotype and an individual Homozygous recessive for the trait of interest
Research has established that the Law of Segregation of Genes during Gamete formation _________. a. is invalid b. applies to all asexually reproducing organisms c. applies to all sexually reproducing organisms d. applies to all forms of life
c. applies to all sexually reproducing organisms
Inherited chromosomal disorders arise when ___________________. a. chromosomes occur mutations DURING Mitosis chromosome segregation does not occur correctly during Mitosis while gametes are forming b. chromosome integregation does not occur correctly during Meiosis while gametes are forming c. chromosome segregation does not occur correctly during Meiosis while gametes are forming
c. chromosome segregation does not occur correctly during Meiosis while gametes are forming
In a Monohybrid Cross, how many internal squares does a Punnett Square contain? a. sixteen b. two c. four d. one
c. four
A person with Klinefelter's Syndrome externally resembles a ___________. a. female b. shemale c. male d. anamale
c. male
Sex-linked conditions are more common in men than in women because ____________. a. the Genes associated with the Sex-linked conditions are linked to the Y Chromosome, which determines Maleness b. the Sex Chromosomes are more active in men than in women c. men need to inherit only one copy of the recessive Allele for the condition to be fully expressed d. men acquire two copies of the defective Gene during Fertilization
c. men need to inherit only one copy of the recessive Allele for the condition to be fully expressed
Most Human Genetic Disorders are caused by two copies of ____. a. Dominant Alleles b. drinking during pregnancy c. recessive Alleles d. a Mutation that occurs in the Egg, Sperm, or Zygote e. Multiple Alleles
c. recessive Alleles
Phenotype means ________. a. the combination of Alleles in an individual b. the number of Gametes in an individual c. the number of Chromosomes in an individual d the observable expression of the Genes in an individual
d the observable expression of the Genes in an individual
Down Syndrome is having one extra Chromosome in the _______ "pair" of an individual. a. 20th b. 23rd c. 1st d. 21st e. 2nd
d. 21st
What are the Non-sex Human Chromosomes (pairs #1-22) called? a. Dominant Chromosomes b. recessive Chromosomes c. Sex Chromosomes d. Autosomes
d. Autosomes
Which two scientists rediscovered Mendel's work which led to the theory that chromosomes are the genetic material responsible for inheritance? a. Boveri and Sutton b. Darwin and Wallace c. Di Vinci and Aristotle d. Lyell and Hutton
d. Autosomes
All the offspring of a cross between a Red-flowered plant and a White-flowered plant have Pink flowers. This means that the Allele for Red flowers is ________ to the Allele for White flowers. a. Dominant b. recessive c. Codominant d. Incompletely Dominant
d. Incompletely Dominant
A(n) _____________ is the specific location of a gene along a Chromosome. a. Locust b. Genosome c. Locasome d. Locus
d. Locus
___________ is having only one chromosome in a "pair" (there is a single chromosome where a pair should be). a. Tetrasomy b. Trisomy c. Disomy d. Monosomy
d. Monosomy
In a person with Klinefelter's Syndrome, the 23rd Chromosome "pair" looks like ________. a. X__ b. __Y c. XYY Correct Answer d. XXY
d. XXY
A Monohybrid Cross is ___________. a. a breeding experiment in which the Parental varieties have two Characters in common b. the second generation of a Self-fertilized plant c. a breeding experiment in which the Parental varieties have only one trait in common d. a breeding experiment in which the Parental varieties differ in only one Character
d. a breeding experiment in which the Parental varieties differ in only one Character
A person with Turner's Syndrome has ___________. a. a thin-shaped chest and a webbed neck b. a thin-shaped chest and a long neck c. a broad shield-shaped chest and a long neck d. a broad shield-shaped chest and a webbed neck
d. a broad shield-shaped chest and a webbed neck
A person with Klinefelter's Syndrome has ______. a. a low incidence of mental deficiency b. an average incidence of mental deficiency c. no incidence of mental deficiency d. a high incidence of mental deficiency
d. a high incidence of mental deficiency
A person with Super Female Syndrome is usually ___________. a. shorter than normal with short legs b. shorter than normal with a short torso and short legs c. taller than normal with a long torso and short legs d. taller than normal with long legs
d. taller than normal with long legs
A person with Klinefelter's Syndrome has ______. a. narrower hips than normal and low pitched voices b. wider hips than normal and low pitched voices c. narrower hips than normal and high pitched voices d. wider hips than normal and high pitched voices
d. wider hips than normal and high pitched voices
The _________ Gene on the Y Chromosome initiates the development of Testes and without it, a Human becomes a Female with Ovaries. a. SRV b. XYY c. XXY d. SUV e. SRY
e. SRY
In Humans, in the 23rd pair of Chromosomes or Sex Chromosomes, the Allele pair XY represents ___________. a. a female b. None of these are correct c. an animale d. a confused person e. a male
e. a male
