Biology Review

Flashcard
•
Biology
•
9th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What are alleles?
Back
Alleles are different forms of a gene that can exist at a specific locus on a chromosome.
2.
FLASHCARD QUESTION
Front
What does homozygous mean?
Back
Homozygous refers to having two identical alleles for a particular gene (e.g., TT or tt).
3.
FLASHCARD QUESTION
Front
What does heterozygous mean?
Back
Heterozygous refers to having two different alleles for a particular gene (e.g., Tt).
4.
FLASHCARD QUESTION
Front
What is a cladogram?
Back
A cladogram is a diagram that shows the evolutionary relationships among various biological species based on similarities and differences in their physical or genetic characteristics.
5.
FLASHCARD QUESTION
Front
Which organism is the closest relative of humans according to cladistics?
Back
The hare is considered the closest relative of humans among the given options.
6.
FLASHCARD QUESTION
Front
What is the genotype for a purple flower if green is dominant?
Back
The genotype for a purple flower is gg, as it must be homozygous recessive.
7.
FLASHCARD QUESTION
Front
What are the components of the DNA backbone?
Back
The DNA backbone is made up of deoxyribose (sugar) and phosphate groups.
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