ch 12

in terms of probabilities, the cross of a tall yellow seeded pea plant (TTYy) with a tall green seeded pea plant (Ttyy) is equivalent to which two monohybrid crosses?

- TT xTt and Yy x yy

a nonfunctional allele for tyrosinase is characteristic of the genetic condition called?

- albinism

what was the ratio that Mendel observed between dominant and recessive traits in the F2 offspring of a monohybrid cross?

- 3 dominant, 1 recessive - 3:1

a person with type a blood can receive blood from

- A - O

in a typical monohybrid cross, all of the offspring in which generations will exhibit a single trait without blending?

- F1

match the following blood type genotypes with phenotypes

- I^A i - type A - I^BI^B - type B - ii- type O - I^A I^B - type AB

the probability of genotypes in an independently assorted dihybrid cross is based on the probabilities of

- 2 monohybrid crosses

in pea plants, the allele T encodes for tall plants, while the allele t encodes for dwarf plants. if a true breeding tall pea plant is crossed with a true breeding dwarf plant what the expected genotypes of the offspring

- all Tt

the form of a trait that is always expressed when crossing 2 rule breeding parents in a monohybrid cross is called

- dominant

when the interaction of genes alters genetic ratios, this is called

- epistasis

the rule of addition is applied to events with mutually ___ outcomes

- exclusive

in pea pants, the allele T codes for tall plants and the allele t codes for short plants. a plant that is Tt has a __ genotype and phenotype of ___

- heterogenous - tall

what type of experiment involves mating 2 individuals with different characteristics to each other? one individual provides female gametes, while the other provides male gametes

- hybridization

which of the of the following conditions is inherited due to a dominant allele?

- juvenile glaucoma * causes degeneration of nerve fibers in the optic nerve, leading to blindness

segregation o alleles occurs during which of the following processes?

- meiosis

place the three stages of mendels experiments in the correct order from list (on top) to last?

- mendel allowed plants of a given variety to self cross for multiple generation s - reciprocal crosses between true breeding varieties - allowing hybrid offspring to self fertilize

which of the these traits exhibit a dominant mode of inheritance?

- mid-digital hair - polydactyl - hypercholesterolemia

although he did not know it, Mendel's principle of secretions scientific basis is meiosis. the second meiotic division produces gametes that contain

- one homologue for each chromosome

the physical appearance or other observable characteristic of an individual is called his/her

- phenotype

to calculate the probability that if a woman has 4 children, they will all be girls, you should use the

- product rule

a ___ square can be used to predict the outcome of a simple genetic cross

- punnett

the ___ form of a trait is the one that is not expressed in the F1 generation of a monohybrid cross

- recessive

the following pedigree is representative of which type of inheritance? (figure)

- recessive

difference between dominant and recessive

- recessive- appears in both sexes, skips generations, and usually dont have afffected parents - dominant- one parent has to be affected, cant skip a generation, and appears in both sexes with equal transmition

which of the following are components of mendels five element model

- the presence of an allele doesn't ensure that it will be expressed - the two alleles remain discrete - alternative forms of genes are called alleles - parent transmit genes to offspring

a pea plant with green seeds is allowed to self hybridize. all of the following offspring plants produce green seeds as well. that plant is therefore considered to be a

- true- breeding plant

match these 4 blood phenotypes with the sugar exhibited on red blood cells

- type A galactosamine - type B galactose - type AB both galactose and galactosamine - type O none

a temp sensitive version of the enzyme ____ is responsible for the pattern of fur color in Siamese cats

- tyrosinase

multiplication rule additional rule

- used for independent events - used for mutually events

assuming independent assortment, which of the following are ex of gametes produced by an AaBb individual?

-AB -ab * punnett square

which of the following plants was the main organism for Mendel's genetic experiments?

-pea

which of the following takes place automatically within an individual garden pea plant if its not disturbed

self- fertilization