Punnett Squares
What percentage does each box in a Punnett Square represent?
25%
What are the X shaped structures found in the nucleus of a cell?
Chromosomes
What is the difference between phenotype and genotype?
Phenotype = physical traits
Genotype = 2 alleles (GG)
What is the name of the method of reproduction for sexual reproduction?
Meiosis
On a pedigree, what does the circle represent?
Female
What will be all the possible genotypes if a purebred yellow (GG) plant breeds with a purebred white (gg) plant?
Gg only
What is the name for a segment of DNA called?
Gene
In genotype, what letters represent dominant and recessive?
Dominant = capital (A)
Recessive = lowercase (a)
Is the following phrase true of sexual reproduction, asexual reproduction, or both: "Genetic information passing to the next genetics"
Both
How many parents are required for meiosis? How many for mitosis?
Meiosis = 2 parents
Mitosis = 1 parent
If T (dominant) is tall plants, and t (recessive) is short plants. What would be the percentage of tall offspring if two Tt plants were bred?
75%
Put the following in order of where they are located: Gene, DNA, Nucleus, Chromosome, Cell
Cell - Nucleus - Chromosome - DNA - Gene
Using the letter H, state all the homozygous and heterozygous genotypes.
Homozygous = HH & hh
Heterozygous = Hh
Sea star regenerating a new arm is an example of what method of reproduction: mitosis or meiosis?
Mitosis
A bacterium splits in half, forming two new bacteria is using what method of reproduction?
Mitosis (Asexual reproduction)
In humans, widows peak (W) is dominant and straight hairline (w) is recessive. If a male heterozygous for widows peak and a female has a straight hairline, what is the probability the offspring will have a straight hairline?
50%
46 chromosomes; 23 pairs
Explain why two siblings with the same parents may look different?
the siblings received a random set of genes from both parents
If a population could only use asexual reproduction, what would be the affect it has on genetic variation?
the genetic variation would decrease or stay the same
In a pedigree that shows 3 generations, what would the relationship be with a square one the top row and a circle on the bottom row?
Grandfather and granddaughter
Straight hair (S) is dominant to curly hair (s). What is the probability that two heterozygous people with have an offspring with curly hair?
25%
What is the full name for DNA?
Deoxyribonucleic Acid
In a heterozygous Ff cross, in which box on the Punnett Square would you find the homozygous dominant genotype?
The top left box; box 1
How does an offspring produced by asexual reproduction (mitosis) compare to the parent organism?
it is an exact replica of the parent cells DNA; a clone
For eye color, brown eyes (B) are dominant and blue eyes (b) are recessive. If a brown eyed heterozygous male has an offspring with blue eyes, what are his wife's possible genotypes?
Bb or bb