Identify the law:

Tt x Tt

Identify this law:

RrTt x RrTt

an individual of a monohybrid cross

an individual of a dihybrid cross

a gamete of a monohybrid cross

a gamete of a dihybrid cross

Gregor Mendel used pea plants to study ___

Mendel used plants he produced by

self-pollination.

Hint:(he pollinated the plantshimself)

These plants were ___

When Mendal croosed true breeding tall plants with

true breeding short plants all the

plant offspring were tall because

When Mendel crossed both true breeding plants,

the offspring were the ____ generation

If a cross produces 3 tall and 1 short plant,

then what is the genotype of the parent plants?

Unit of inheritance that is responsible for a

character or trait.

Allele that is fully expressed in an organism’s

appearance is called

The genetic makeup of an organism is called

The physical characteristics of an organism are called

Term used to refer to an organism that has two

identical alleles for a particular trait

Which of the following is a possible abbreviation

for the genotype of an individual for a monohybrid trait?

Which of the following is a possible abbreviation for

the genotype of an individual for a dihybrid trait?

Which of the following is a possible abbreviation for

the genotype of a gamete for a monohybrid trait?

Which of the following is a possible abbreviation for

the genotype of a gamete for a dihybrid trait?   

In the P generation, a pure tall plant is crossed with a short plant

The probability that an F2 plant will be tall is

In a cross between TT x Tt, where T is tall and t is short,

which of the following is true about the offspring

resulting from the cross?

A Punnett square shows all of the following EXCEPT

F1 offspring are crossed to produce F2 offspring with a

3 to 1 ratio of dominant to recessive. 

This illustrates which Law?

During gamete formation genes for different traits separate

without influencing each other’s inheritance.

This illustrates which Law?

B = black b = brown T = tall t = short

What gametes would be produced by a heterozygous black, short individual?

B = black b = brown T = tall t = short

How many types of gametes would be produced by an individual that is heterozygous black and short? 

B = black b = brown T = tall t = short

What is the phenotype ratio of a cross between two heterozygous black, heterozygous tall individuals?

Which cross would best illustrate Mendel’s

Law of Dominance?

Which cross would best illustrate the

Law of Independent Assortment?

The crossing of an organism, with an unknown genotype, to a homozygous recessive organism (tester). 

hint: key words

Each trait contributes and the phenotype is an intermediate between the dominant and recessive. Example: R- red W-white RW pink

BOTH alleles are expressed at the same time. The heterozygous phenotype shows BOTH of the 2 homozygous phenotypes

example: blood types

More than 2 alleles examples are blood type and rabbit color

 A factor on the blood cell is an (A, B, A and B, or none)

recognize and target cells with antigens for destruction

 several genes control one trait. Examples: skin color

one gene affects many traits. Examples: sickle cell

 Takes advantage of naturally occurring genetic variation to pass desired traits to he next generation

dissimilar plants/animals are crossed to improve offspring

(best of both)

similar plants/animals are crossed to keep or improve traits

double, triple # of chromosomes. Fatal in animals Plants are often larger

Making changes in DNA code

 circular DNA found in bacteria that can produce recombinant DNA by inserting other genes into them.

 two different types of DNA combined together

Organisms – genes from one species are placed into another species.

Example: plasmid, soybean, corn

 Why is mitochondrial DNA passed to children by their mothers?

Explain nondisjunction and describe at least two diseases caused by nondisjuction.

 Explain why it is more likely that a male would have red-green color blindness than a female.

Explain using a specific example how environmental factors could cause or alter the expression of a multifactorial genetic disorder.

Person’s with Turner syndrome are female and with Kleinfelter are male. Why?