Meiosis
Mitosis produces ___ daughter cells. Meiosis produces ___ daughter cells.
What is 2, 4
When two pea plants are crossed to produce offspring, the offspring are known as the ___ generation.
What is F1
Parent 1 has blood type A and parent 2 has blood type B. Their child has blood type AB. Which of the following modes of inheritance best explains this?
What is codominance?
The specific location where crossing over occurs is the ___.
What is the chiasmata?
Cystic fibrosis is an autosomal recessive trait.
A couple has two children. If both parents are heterozygous for the trait, this is the probability of both children having the disease?
What is 1/16?
Homologous pairs separate during ___.
What is anaphase I?
Blue flower color (B) is dominant to white flower color (b). If a true breeding blue flower is crossed with a true breeding white flower, list the possible genotypes of the offspring.
What are Bb?
A brown guinea pig and a white guinea pig are crossed and produce tan offspring. Which of the following modes of inheritance best explains this?
What is incomplete Dominance?
If a pedigree shows one parent in each generation is affected, and the trait does NOT skip a generation, the trait is most likely ____.
What is autosomal Dominant?
A family pedigree shows the inheritance of a disease across three generations. In each generation, approximately half of the men are affected, but none of the women. This represents what most likely mode of inheritance for this trait?
What is X Linked Recessive?
This is the haploid number for an organism with a chromosome number of 2n=50
What is 25?
Parents with the genotypes (Hh) and (hh) are crossed. This is the phenotypic ratio
What is 1:1?
A recombination frequency of 50% would indicate this
What is genes are far apart or on different chromosomes?
This is when the phenotypic expression of a gene at one locus affects a gene at another locus.
What is epistasis?
A Chi Square analysis suggests there is a statistically significant difference between the actual and expected values when ___.
What is Χ2 > critical value?
This is the number of homologous pairs present during gametogenesis in prophase II if n = 30
What is 15 homologous pairs?
This law claims the two alleles for the same trait separate during gamete formation and end up in different gametes
What is the law of Segregation?
Identical twins who were separated at birth grow up in different environments. One twin lives near the equator and the other lives near the Arctic Circle. Over time, the twins develop different skin colors. Which of the following best explains this situation?
What is phenotypic Plasticity?
If asked to calculate the probability of parents having offspring with the genotypes AaBb or AABb, which rule would be used?
What is the rule of Addition?
This most commonly occurring genetic disease is most likely caused by nondisjunction?
What is Down's Syndrome?
List THREE ways meiosis increases genetic diversity.
What are crossing Over, Independent Assortment of Chromosomes and random Fertilization
Hamsters can be short-haired (S) or long-haired (s) and have brown fur (B) or white fur (b). If two individuals heterozygous for both traits are crossed, what would you write across the top of the Punnett square? (i.e. how do you set up for a dihybrid cross?)
What are SB / Sb / sB / sb?
Genes that are linked show parental phenotypes in what percent of offspring?
What is at or higher than 50%?
When individuals with the same genotype exhibit different phenotypes in different environments, this is known as ____.
What is phenotypic Plasticity?
This occurs when one gene influences two or more seemingly unrelated phenotypic traits.
What is pleiotropy?