Genetics Review Flashcardizz
Flashcard
•
Biology
•
9th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is codominance in genetics?
Back
Codominance is a pattern of inheritance where both alleles in a heterozygous organism contribute equally and visibly to the organism's phenotype. For example, in a flower with red (RR) and white (WW) parents, the offspring may have both red and white patches (RW).
2.
FLASHCARD QUESTION
Front
What is incomplete dominance?
Back
Incomplete dominance is a pattern of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes. For example, crossing a red flower (RR) with a white flower (WW) results in pink flowers (RW).
3.
FLASHCARD QUESTION
Front
What is complete dominance?
Back
Complete dominance is a pattern of inheritance where the dominant allele completely masks the effect of the recessive allele in a heterozygote. For example, in a pea plant, if T (tall) is dominant over t (short), then Tt will be tall.
4.
FLASHCARD QUESTION
Front
What does homozygous recessive mean?
Back
Homozygous recessive refers to an organism that has two identical recessive alleles for a trait. For example, 'rr' is homozygous recessive for the trait of height in pea plants.
5.
FLASHCARD QUESTION
Front
What is a trait in genetics?
Back
A trait is a characteristic or feature of an organism that can be passed on to its offspring through genes. Examples include flower color, height, and seed shape.
6.
FLASHCARD QUESTION
Front
What is a gene?
Back
A gene is a segment of DNA that contains the instructions for building a specific protein or set of proteins, which ultimately determine a trait.
7.
FLASHCARD QUESTION
Front
What is an allele?
Back
An allele is a variant form of a gene. For example, a gene for flower color may have a red allele (R) and a white allele (W).
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