In this type of inheritance pattern, the alleles are neither dominant nor recessive. As a result, both alleles are expressed together in the offspring. (Red x White = Red and White spotted)
What is codominance?
100
Number of divisions that occurs during mitosis.
What is one division?
100
DNA stands for this.
What is Deoxyribonucleic Acid?
100
This kind of allele is one whose trait always shows up in the organism when just one allele is present.
What is the dominant allele?
200
The different forms of a gene.
What are alleles?
200
These are not used when writing the genotype of codominant or incomplete hereditary patterns.
What are lower case letters?
200
Chromosomes line up along the middle of the cell during this step of both mitosis and meiosis.
What is Metaphase?
200
Three scientists whose work helped in our understanding of the structure of DNA.
Who are Rosalind Franklin, James Watson, and Francis Crick?
200
A purebred organism can also be described using this term.
What is homozygous?
300
Mendel found the plants in the F2 generation to show what ratio of traits? Be specific.
What is a 3:1 ratio, 75% being tall and 25% being short?
300
A white flowering plant is crossed with a red flowering plant, and the resulting offspring has pink flowers. This is an example of this hereditary pattern.
What is incomplete dominance?
300
Chromosomes split apart and move to opposite ends of the cell during this step of mitosis and meiosis.
What is Anaphase?
300
During prophase, the threadlike chromatin in the nucleus condenses to form these double-rod structures.
What are chromosomes?
300
Mitosis produces this type of cell.
What is a body, or somatic cell?
400
Heterozygous is another word for this kind of organism.
What is a hybrid?
400
This kind of reproduction requires only one parent and results in an offspring that is genetically identical to the parent.
What is asexual reproduction?
400
Meiosis produces this kind of cells, each containing half the number of chromosomes as the original parent cell.
What are sex cells, or gametes?
400
Nitrogen bases always pair up in this way.
Adenine always pairs up with Thymine, and Cytosine always pairs up with Guanine?
400
A chart that shows all the possible combinations of alleles that can result from a genetic cross.
What is a Punnett Square?
500
The physical appearance, or visible traits, of an organism.
What is the phenotype?
500
A major disadvantage of asexual reproduction over sexual reproduction.
What is it DEcreases genetic diversity?
500
The stage of mitosis where the chromosomes begin to stretch out and lose their rodlike appearance. A new nuclear envelope forms around each region of chromosomes.
What is telophase?
500
The two sides of a DNA molecule are made up of these two molecules.
What are sugar (Deoxyribose) and phosphates?
500
Assuming "T" is the allele for "tall", a dominant trait, this is the genotype of an organism that is heterozygous for the tall trait.