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biology-human reproduction
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Cards (66)
What is the term for variation that can take any numerical value?
Continuous variation
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What does normal distribution represent?
Distribution of variables in a
bell-shaped curve
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How is a species defined?
Group of organisms that can
interbreed
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What is discrete variation?
Differences in characteristics grouped into
categories
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What is an example of continuous variation?
Height
or
wingspan
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What is an example of discrete variation?
Eye color
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What causes inherited variation?
Differences caused by
DNA
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What is
environmental
variation
?
Differences caused by the environment
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Why are siblings not exactly the same?
They inherit different
genes
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How can variation be important for survival?
It can provide a
survival advantage
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What is one inherited characteristic mentioned?
Eye color
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What is one environmental characteristic mentioned?
Accent
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Name three features a foal inherits from its parents.
Eye color,
hair
, blood
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Why can children from the same parents be very different?
They inherit different
genes
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Will all types of variation give a survival advantage?
No
, some variations can be
disadvantageous
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What is the importance of genetic and environmental variation?
They enable
adaptation
and
resilience
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What happens to the uterus lining during menstruation?
It breaks apart and
bleeds
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What occurs during ovulation?
An
egg cell
is released from the
ovary
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How long does menstruation last?
Approximately
3-7
days
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What is the purpose of the female reproductive system?
To provide
egg cells
and support a
fetus
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What are possible causes of infertility?
Stress, alcohol, smoking,
blockages
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What is the definition of menstruation?
Cyclical breakdown of
uterus
lining
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What is the role of the placenta?
Provides
oxygen
and nutrients to the
fetus
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What is an embryo?
Young
fetus
before main organs form
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What is gestation?
Process where baby develops during
pregnancy
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What is the difference between an embryo and a fetus?
An embryo is before
organs
form
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What is the function of the umbilical cord?
Connects
fetus
to mother's
placenta
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What protects the fetus during pregnancy?
Amniotic fluid
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What are the main purposes of the male reproductive system?
To produce
sperm
and
inseminate
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What is the role of the sperm duct?
Tube carrying sperm from the
testes
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What is fertilization?
Fusion of
male
and
female
sex cell
nuclei
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What happens during sexual intercourse?
Sperm
is released into the female
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What is the function of the prostate gland?
Where
semen
is made
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What is the role of the scrotal sac?
Protects
testicles
and regulates temperature
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What is the journey of a sperm cell?
From
testicles
through sperm duct to
urethra
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What is the difference between ovulation and fertilization?
Ovulation is
egg release
; fertilization is
fusion
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What is the definition of validity in research?
Suitability of a
procedure
to answer a question
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What is the effect of alcohol on pregnancy?
Higher rate of
stillbirths
and lower
IQ
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What is folic acid?
Substance that aids
fetal
brain development
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How can we determine if evidence is valid?
It considers all
variables
and is
unbiased
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See all 66 cards
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