Lab 5 Flashcards
What does P1 and P2 refer to?
the parental generation
What is a cross between two F1’s called? (what are the resulting offspring)
F2 generation
What is a gene?
a factor of inheritance for a particular trait or characteristic
What are alleles?
different forms of a gene
What is a genotype?
the genetic makeup of an organism
What is a phenotype?
the physical appearance of an organism for a particular trait
What is a frequency?
the proportion of one type of thing to the total population
What is a monohybrid cross?
a cross between two organisms that only differ by one characteristic
What is a dihybrid cross?
a cross between organisms that differ with respect to two characteristics
What is Mendel’s first law called?
the principle of segregation
What does Mendel’s first law mean?
alleles of one gene segregate separately from one another during the formation of gametes
What does Mendel’s second law mean?
alleles of different genes assort independently of one another during gamete formation
What is a test cross?
crossing an individual of unknown genotype with a homozygous recessive individual
Do genes that are located close together on a chromosome move together or apart during gamete formation? What is this called?
together. they are said to be linked.
What happens during crossing over?
genetic exchange
