Why do organisms look the way they do?

Flashcard
•
Science, Biology
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
How many pairs of chromosomes do humans have?
Back
Humans have 23 pairs of chromosomes.
2.
FLASHCARD QUESTION
Front
What is the term for the genetic makeup of an organism?
Back
Genotype.
3.
FLASHCARD QUESTION
Front
What is the observable physical characteristic of an organism?
Back
Phenotype.
4.
FLASHCARD QUESTION
Front
How many generations are typically shown in a pedigree chart?
Back
A pedigree chart can show multiple generations, often 3 or 4.
5.
FLASHCARD QUESTION
Front
What does it mean if a trait is recessive?
Back
A recessive trait is one that is only expressed when two copies of the gene are present.
6.
FLASHCARD QUESTION
Front
What is the difference between a histogram and a bar graph?
Back
A histogram displays numerical data while a bar graph displays categorical data.
7.
FLASHCARD QUESTION
Front
What is the basic unit of heredity?
Back
Gene.
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