bio lab practice 2

Monohybrid cross ratio

3:1

Dihybrid cross outcome

9:3:3:1

Cross involving 2 traits

Dihybrid

Genetic make up of a trait

Genotype

2 alleles of a trait are different are said to be

Heterozygous

Location of a gene on a chromosome

Locus

Trait that individuals express

Phenotype

Chart used to determine probable outcomes

Punnett square

Lower case letter indicates

Recessive

Cross between an unknown and a recessive individual

Testcross

sex-linked traits

Traits controlled by genes located on sex chromosomes.

Mendel's Law of Independent Assortment

allele pairs separate independently during the formation of gametes

Medels law of segregation

allele pairs separate or segregate during gamete formation, and randomly unite at fertilization.

What are co-dominant traits?

allele that is independently and equally expressed along with the other

The gene for fangs is recessive, yet most of the dragons have fangs. How can this happen

dragon with fangs might be better suited to its environment because not all dominant always show

explain how dropping the green, orange, and red stick illustrates mendel's law of independent assortment

dropping the sticks show this law because they do not effect each other because they are independent

unit of heredity

gene

what traits are more likely to be found in males?

having a tail, short arms, spikes, and fire breather. able them survive better

How does dropping the stick on the table and transcribing the letters on the side facing up follow mendel's law of segregation?

it show segregation determining which alleles end up in the gamete

what trait are sex linked

wings, elbow spikes

what traits are more likely to be found in females

wings, no elbow spikes and comb on head. able them to survive better