Chapter 3 Flashcards
The female gamete cell is referred to as a(n)
A. Y chromosome
B. Zygote
C. X Chromosome
D. Ovum
D. Ovum
The human sperm cell contains
A. Twenty-three chromosomes
B. Forty-six chromosomes
C. Twenty-three genes
D. Forty-six genes
A. Twenty-three chromosomes
One of Tom’s cells is undergoing the process of meiosis. Consequently, the cell will become
A. Two sperm cells with twenty-three chromosomes each
B. Two sperm cells with forty-six chromosomes each
C. Four sperm cells with twenty-three chromosomes each
D. Four sperm cells with forty-six chromosomes each
C. Four sperm cells with twenty-three chromosomes each
The set of traits an individual inherits is referred to as the
A. Karotype
B. Phenotype
C. Genotype
D. Zygote
C. Genotype
The period of the zygote lasts about __________, beginning with __________.
A. 3 months; fertilisation
B. 2 weeks; implantation
C. 2 weeks; fertilisation
D. 3 months; implantation
C. 2 weeks; fertilisation
The gene for farsightedness is dominant over the gene for normal vision or the gene for nearsightedness. William has a gene for farsightedness and a recessive gene for blue eyes. William will definitely
A. Have blue eyes that will definitely need corrective lenses
B. Not have blue eyes but they may have corrective lenses
C. Need corrective lenses and his eyes may be blue
D. Not have blue eyes and will definitely not need any corrective lenses
C. Need corrective lenses and his eyes may be blue
Given that red hair is recessive, a person with red hair is ____ for that trait.
A. Heterozygous
B. Polygenic
C. Homozygous
D. Monozygotic
C. Homozygous
Joe is a normal male. His sex chromosomes are
A. YY
B. XX
C. XY
D. XXY
C. XY
There are more ____ zygotes and more ____ newborns.
A. Female; female
B. Female; male
C. Male; female
D. male; male
D. Male; male
Kathy and Tom want to have children, but have learned that Tom has poor sperm quality. Which type of fertility treatment would best suit their needs?
A. Artificial insemination
B. In-vitro fertilisation
C. Gamete intrafollopian tube transfer
D. Zygote intrafollopian tube transfer
A. Artificial insemination
Pregnant teens are at greater risk for all of the following except
A. Low birth weight babies
B. Stillbirths
C. Problems during delivery
D. Having a child with Down’s syndrome
D. Having a child with Down’s syndrome
Which of the following disorders is caused by the absence of a chromosome?
A. Down syndrome
B. Klinefelter syndrome
C. Huntington disease
D. Turner syndrome
D. Turner syndrome
After Mindy became pregnant with her first child, her husband Carl was diagnosed with Huntington’s disease, a dominant gene disorder. What are the chances that the child will be born without the disorder?
A. 0%
B. 25%
C. 50%
D. 75%
C. 50%
The period of the embryo lasts from
A. Weeks three through eight of the pregnancy
B. Weeks two through twelve of the pregnancy
C. Implantation through the eighth week of pregnancy
D. The eight weeks of pregnancy until birth
A. Weeks three through eight of the pregnancy
Latisha has just become pregnant. Because there is a history of a chromosomal disorder in her family, she has been advised to seek prenatal diagnosis. Since Latisha is determined to use the technique that is considered least risky to the mother and foetus, she will probably choose to have
A. An amniocentesis
B. Chorionic villus sampling (CVS)
C. Preimplantation diagnosis
D. An ultrasound
A. An amniocentesis
