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Meiosis
Mendelian Genetics
Dihybrid Cross
Non-Mendelian Genetics
100
The type of Cell division that produces Gametes

Meiosis

100

What is the Genotype "AA" an example of?

Homozygous Dominant

100

A dihybrid cross is only used when...

there are 2 traits 

100

An inheritance pattern where two alleles are expressed equally, neither allele is dominant or recessive (ex. Blood Type) 

Codominance

200

the process that occurs during prophase 1 that allows for chromosomes to exchange genetic information 

Crossing over

200

What percentage of the offspring from this cross would inherit the dominant allele? 

                         Rr x  Rr

50%
200

 Make a KEY for the problem: Tall is dominant to short and green is dominant to yellow. 

Tall =        short =            Green =    yellow = 

Tall= T       Short= t        Green= G     yellow=g

200
An inheritance pattern where neither allele is dominant over the other and a heterozygote is a blend of the two traits. 

Incomplete dominance

300
The result of meiosis is...

4 different haploid cells

300

determine the parents for the following cross: 

Tall is dominant to short. A heterozygous Tall plant is crossed with a homozygous recessive short plant. 

Tt x  tt

300

A genetic cross involving two unlinked genes is represented below.

GgHH x ggHh

Which of the following combinations can they make together? (write all that are correct)

     GGHh         GgHH          ggHH          gghh


GgHH, ggHH

300

A homozygous red-flowered snapdragon (RR) is crossed with a heterozygous pink snapdragon (RW). What would be the percentage of pink flowers?

50%

400
In humans the haploid number of chromosomes found in a gamete is 23 chromosomes. Fertilization of an egg would create a zygote, a diploid cell with _____ chromosomes

46

400

Is it possible for a brown haired (BB) parent and a red haired (bb) parent to have a child with red hair?

no (0)

400

determine the parents of the following cross

B: Black Bears    b: white bears 

F: Wavy fur        f: straight fur 

Heterozygous black fur and heterozygous wavy fur crossed with a white fur and Homozygous dominant for wavy fur. 

BbFf x bbFF

400

B:Black             W: White              BW: Speckled

Cross a black chicken and a speckled chicken. How many of the offspring will be white? 

0

500

Which of these is the most likely the result of crossing over?

A Chromosome replication will cease to avoid errors that result in mutations.

B Offspring will no longer express traits from previous generations.

C Gametes will contain new allele combinations.

D Chromatids will have less genetic variety.

C Gametes will contain new allele combinations.

500

If a red flower (EE) is cross bred with a yellow flower (ee), how many different phenotypes are possible? 

one (Ee) 

500

LlBb x Llbb 

L: long trunk    l: short trunks 

B: Big ears        b: small ears

Complete the Punnett square for each trait and determine the probability of long trunk with small ears offspring. 

6- Long trunk with small ears

500

Blood type: Use your notes to determine the genotypes

A type O person has children with a type AB person. What are the possible phenotypes of the offspring?

IA or IB