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