Terms in this set (31)
The _____ produced by each parent are shown along the sides of a Punnett square.
a. zygotes c. gametes
b. offspring d. hybrids
The law of independent assortment states that the inheritance of alleles for one trait is not affected by the inheritance of alleles for a different trait if the genes for the traits are on _____.
a. separate chromosomes
c. the same chromosome
b. homologous chromosomes
d. homozygous chromosomes
a. separate chromosomes
Genes located on homologous chromosomes may have alternate forms that control different forms of a trait. These alternate forms of a gene are called _____.
The backbone of a DNA molecule is made of which two components?
deoxyribose sugar and phosphate
The pairing of _____ in DNA is the key feature that allows DNA to be copied.
b. nitrogen bases
Where does protein synthesis happen in the cell?
Both alleles contribute to the phenotype
creates a blended phenotype; one allele is not completely dominant over the other
any chromosome that is not a sex chromosome
one of two chromosomes of the 23rd pair of human chromosomes, which determine an individual's gender
a trait that is determined by a gene found on one of the sex chromosomes, such as the X chromosome or the Y chromosome in humans
case of co-dominance, alleles are both fully expressed in heterozygote, a classification of blood that depends on the type of antigen present on the surface of the red blood cell; A, B, AB, or O
an organism or cell having only one complete set of chromosomes
an organism or cell having two sets of chromosomes or twice the haploid number
an organism that has two identical alleles for a trait
an organism that has two different alleles for a trait
trait that will show up in an organism's phenotype if gene is present
a trait that is apparent only when two recessive alleles for the same characteristic are inherited
When did humans evolve?
Which group of organisms is believed to have been the earliest to evolve?
a. land plants
c. aquatic dinosaurs
Which type of natural selection favors the average individuals in a population?
What is the movement of genes into and out of a gene pool called?
Anatomically similar structure inherited from a common ancestor
structure that has the same function but different construction and was not inherited from a common ancestor
the evolutionary history of an organism
the science of describing, naming, and classifying organisms
formation of new species
the process of grouping things based on their similarities
classifies organisms based on their phylogenetic relationships
dormant bacterial cell enclosed by a tough coating that is highly resistant to environmental stress
can be harmful
a virus that infects bacteria
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