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22 Cards in this Set

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What is a single-celled organism called?
An ameba
Which of the following is true about chromosomes?
A.They dissolve when a cell divides
B.They are threadlike structures in the nucleus of a cell
C.They are one-celled organisms
D.They contain the cell's cytoplasm
What happens when most many-celled organisms reproduce?
Both of the parents contribute to form the offspring
What do the offspring of animals get?
Half of their genes from each parent
Structures in the nucleus of a cell that
control the cell’s activities
A. chromosomes
B. fertilization
C. fertilized egg
D. pollination
The joining of a sperm cell and an egg cell
A. chromosomes
B. fertilization
C. fertilized egg
D. pollination
The cell that results when an egg cell
and a sperm cell unite
A. chromosomes
B. fertilization
C. fertilized egg
D. pollination
Movement of pollen from a stamen to a pistil
A. chromosomes
B. fertilization
C. fertilized egg
D. pollination
What continues to divide even after you finish growing?
Cells
Why do cells continue to grow?
Because the new cells replace the old cells that die
The part of a chromosome that controls a trait
A. inherited
B. gene
C. recessive gene
D. dominant gene
A gene whose expression is
hidden by a dominant gene
A. inherited
B. gene
C. recessive gene
D. dominant gene
A gene that can prevent the
expression of another gene
A. inherited
B. gene
C. recessive gene
D. dominant gene
An individual that has a dominant
and a recessive gene of a trait
A. hybrid
B. gene
C. recessive gene
D. mutation
A permanent change in the structure
of a gene or chromosome
A. hybrid
B. gene
C. recessive gene
D. mutation
Where do the 2 genes for each trait in an offspring come from?
The parents, each parent gives one trait to the offspring
What happens when a dominant and a recessive gene are paired?
The dominant gene can hide the effect (the trait) of the recessive gene.
What is the first step in the reproduction of a flowering plant
pollination
What is the process by which cuttings from seedless plants are attached to normal plants to produce new generations of seedless fruit?
grafting
Who experimented with fruit flies to learn about chromosomes?
Thomas Hunt Morgan
Are all of the following true about mutations,
they can affect how well body organs work, they can severly damage the body, and they can affect an organism's ability to survive?
YES
If a hybrid breeds with another hybrid what can their offspring have?
Only dominant genes, only recessive genes, or they can be a hybrid