Show:
Lesson 1
Lesson 2
Lesson 3
Vocabulary
Miscellaneous
100
The stages of an organism's life make up its _______.
Life cycle
100
RR is a _____________________ trait.
Dominant
100
What do animals need from their environment?
food, water, space, and shelter
100
What's a factor that contains the DNA code for a trait?
gene
100
A characteristic passed from parents to offspring is what?
An inherited trait
200
The _____________ disappears as mitosis begins.
nuclear membrane
200
Rr is a ____________________ trait.
Dominant
200
What happens when an environment changes? Give an example of an animal's environment being changed.
All the living things there are affected.
200
All the living and nonliving things that surround and affect an organism.
environment
200
What's a chromosome?
A threadlike structure in a cell nucleus.
300
Chromosomes make copies of themselves before what?
The cell divides
300
Genes are located on what?
chromosomes
300
How are most animal behaviors learned?
Being taught by adults of the same species or humans.
300
What's a dominant trait?
A characteristic that appears when there is one factor present for it. The stronger trait!
300
How many chromosomes does a zygote have compared to the number of chromosomes that a gamete has?
A zygote has twice as many chromosomes as a gamete.
400
How does cell division help organisms grow?
Cell division results in new cells that have the same function as the old cells. This increases body organ size.
400
Genes control ______________________.
all inherited traits
400
How are ALL members of a population affected by instincts?
ALL members of the population usually share the same instincts or just the males share or just the females share the instincts.
400
What is a life cycle?
The stages that living things pass through as they grow and change.
400
Before a animal cell divides, what happens to its chromosomes?
They become shorter, thicker, and visible in the nucleus of the cell.
500
What are the three functions of mitosis?
Regeneration Asexual Reproduction Growth
500
A recessive trait appears when _____________________.
A dominant factor is NOT present.
500
Give 2 learned behaviors. Give 2 instincts. Give 2 inherited traits.
Answers will vary.
500
What's mitosis?
Process by which most cells divide.
500
What's the difference between an inherited trait, instinct, and a learned behavior?
An inherited trait is a characteristic that's passed from parents to offspring. An instinct is a behavior that is passed from parents to offspring. A learned behavior is a behavior that you get through experience of learning and doing it over and over.