Ch 2 FAD3220 Unit 1 Exam UPDATED
ACTUAL Exam Questions and CORRECT
Answers
zygote - CORRECT ANSWER- sperm enters the ovum and creates a joint cell
genes - CORRECT ANSWER- the basic unit of genetic information
monozygotic twins - CORRECT ANSWER- identical twins; occurs when cells split from
ovum within two weeks of fertilization
dizygotic twins - CORRECT ANSWER- fraternal twins, occurs when two different ova are
fertilized by two different sperm
fertility drugs - CORRECT ANSWER- increase the chances of multiple births
23rd pair of chromosomes - CORRECT ANSWER- sex chromosomes (XX or XY)
polygenic inheritance - CORRECT ANSWER- combined effect of two or more genes on a
single trait
reaction range - CORRECT ANSWER- the potential degree of variability in the expression
of a trait as a result of environmental conditions
X-linked genes - CORRECT ANSWER- A gene located on the X chromosome; such genes
show a distinctive pattern of inheritance.
Men more susceptible
, behavioral genetics - CORRECT ANSWER- the study of the effects of heredity on behavior
and psychological characteristics
spontaneous mutation - CORRECT ANSWER- a random change in the DNA arising from
errors in replication that occur randomly
can be caused by X-rays, pollutions
can be passed on
Down Syndrome - CORRECT ANSWER- a condition of intellectual disability and
associated physical disorders caused by an extra copy of chromosome 21.
Fragile X syndrome - CORRECT ANSWER- a disorder produced by injury to a gene on the
X chromosome, producing mild to moderate mental retardation
sickle-cell anemia - CORRECT ANSWER- a genetic disorder in which RBC's take on an
abnormal curved or "sickle" shape
Tay-Sachs disease - CORRECT ANSWER- a disorder that produces blindness and muscle
degeneration prior to death; there is no treatment
affects those of Jewish ancestry and French-Canadians expecially
Klinefelter's Syndrome (male) - CORRECT ANSWER- -XXY males produce less
testosterone than normal males
-Characteristics such as development of testes, deepening of voice, musculature, and male
pattern of body hair do not develop properly
-Usually mild intellectual disability, particularly in language skills
-T-replacement therapy somewhat helpful
genetic counseling - CORRECT ANSWER- focuses on helping people deal with issues
relating to inherited disorders
ACTUAL Exam Questions and CORRECT
Answers
zygote - CORRECT ANSWER- sperm enters the ovum and creates a joint cell
genes - CORRECT ANSWER- the basic unit of genetic information
monozygotic twins - CORRECT ANSWER- identical twins; occurs when cells split from
ovum within two weeks of fertilization
dizygotic twins - CORRECT ANSWER- fraternal twins, occurs when two different ova are
fertilized by two different sperm
fertility drugs - CORRECT ANSWER- increase the chances of multiple births
23rd pair of chromosomes - CORRECT ANSWER- sex chromosomes (XX or XY)
polygenic inheritance - CORRECT ANSWER- combined effect of two or more genes on a
single trait
reaction range - CORRECT ANSWER- the potential degree of variability in the expression
of a trait as a result of environmental conditions
X-linked genes - CORRECT ANSWER- A gene located on the X chromosome; such genes
show a distinctive pattern of inheritance.
Men more susceptible
, behavioral genetics - CORRECT ANSWER- the study of the effects of heredity on behavior
and psychological characteristics
spontaneous mutation - CORRECT ANSWER- a random change in the DNA arising from
errors in replication that occur randomly
can be caused by X-rays, pollutions
can be passed on
Down Syndrome - CORRECT ANSWER- a condition of intellectual disability and
associated physical disorders caused by an extra copy of chromosome 21.
Fragile X syndrome - CORRECT ANSWER- a disorder produced by injury to a gene on the
X chromosome, producing mild to moderate mental retardation
sickle-cell anemia - CORRECT ANSWER- a genetic disorder in which RBC's take on an
abnormal curved or "sickle" shape
Tay-Sachs disease - CORRECT ANSWER- a disorder that produces blindness and muscle
degeneration prior to death; there is no treatment
affects those of Jewish ancestry and French-Canadians expecially
Klinefelter's Syndrome (male) - CORRECT ANSWER- -XXY males produce less
testosterone than normal males
-Characteristics such as development of testes, deepening of voice, musculature, and male
pattern of body hair do not develop properly
-Usually mild intellectual disability, particularly in language skills
-T-replacement therapy somewhat helpful
genetic counseling - CORRECT ANSWER- focuses on helping people deal with issues
relating to inherited disorders
