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24 Cards in this Set

  • Front
  • Back
It is impossible to meet all your needs by yourself.
TRUE
When will traits carried by recessive genes be expressed?
only when 2(two) recessive genes are paired
Artficially changed traits can be passed to children.
False
What indicates that a person is not mature?
concern that other people meet their needs
When does aging begin?
At birth
During what stage does puberty occur?
adolesence
Which gland secretes a growth hormone?
pititary gland
What are the threadlike structures made up of DNA?
Chromosomes
What are two secondary sex characteristics for a male and a female.
male 1. facial hair
2. voice changes
Female 1. breast development
2.menstruation
Reproductive cells produced by the male are called
sperm cells
Fertilization occurs when the sperm cell joins with an ovum.
True
The most critical period during pregnancy is
0-3 months
Human cells contain 26 chromosomes.
False
When a person has reached full development, he or she has reached
maturity
What is the name given to an unborn baby after the second month?
FETUS
________will not harm the embryo and fetus.
Calcium
All traits are carried by one pair of genes.
False
How many daughter cells are produced during meiosis?
There are 4 daughter cells
What are two secondary sex characteristics for a male and a female.
male 1. facial hair
2. voice changes
What characteristics is not inherited?
bleached blonde hair
What are two reasons to have a job?
make money
being responsible
The testes in a male body secrete a hormone called
testosterone
Meiosis is cell division of _________ cells.
4(four)
At what age do most girls usually go through puberty?
11-14