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Unit test study

Science 2026

QuestionAnswer
A _ _________ trait hides the other trait in a pair. dominant
A __________ trait only shows when two copies are present. recessive
A tool used to predict the outcomes of genetic crosses is called a __________. punnitt square
The physical appearance of a trait is the __________. phenotype
The gene combination an organism has is its __________. genotype
When both alleles are the same, the organism is _ _________. homozygous
When alleles are different, the organism is __________. heterozygous
A chart used to track traits through generations is called a __________. pedigree
Choosing parents with desired traits to reproduce is known as ________. selective breeding
__________ explains how certain traits become more common in a population over time. natural selection
Lichens and algae live together in a relationship called __________. symbiosis
Increased __________ in the air decreases the amount of lichen on trees. sulfer dioxide
Changes in the __________ can affect how organisms grow and survive. environment
The male part of a flower that makes pollen is the __________. anther
The top of the pistil that receives pollen is called the __________. stigma
The structure inside a flower that holds the egg cell is the __ ________. ovule
The __________________ are the reproductive structures of a flower. stamen and pistil
The young produced from a genetic cross are called __________. offspring
As __________ increases, dark trees become more common, helping dark moths survive. pollution
Created by: user-1739566
 

 



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