What are genes?
Heredity and Punnett Squares

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•
Science
•
6th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Segments of DNA that carry traits for offspring.
2.
FLASHCARD QUESTION
Front
What is it called when an organism has two identical alleles for a trait?
Back
Homozygous (purebred).
3.
FLASHCARD QUESTION
Front
What is the probability of offspring having short tusks when a heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant?
Back
50%.
4.
FLASHCARD QUESTION
Front
What trait always shows up in an organism when the allele is present?
Back
Dominant allele.
5.
FLASHCARD QUESTION
Front
What is a chart that shows all the possible combinations of alleles from a genetic cross?
Back
Punnett square.
6.
FLASHCARD QUESTION
Front
What do we call an organism with two different alleles for a trait?
Back
Heterozygous.
7.
FLASHCARD QUESTION
Front
What is the term for the physical expression of a trait?
Back
Phenotype.
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