Lesson 2, Unit 2: Mendel

Question 1

Pure Breeding

Answer 1

• parents will aslo pass down a specific phenotypic trait to their offspring
• purebred organisms will have a pure genotype (genetic expression of a trait) and will only produce a certain phenotype

(only use for entire population)

Question 2

Hybrid

Answer 2

also known as cross breed, is the result of mixing, through sexual reproduction, two animals or plants of different breeds, varieties, species or genera

(only use for entire population)

Question 3

Dominant

Answer 3

dominant traits are those that are expressed or seen when a heterozygous genotype is present

Question 4

Recessive

Answer 4

• a recessive gene is a gene that gets trumped by a dominant gene
• for example, your mom’s recessive gene for blue eyes was trumped by your dad’s dominant gene for brown eyes
• that’s how you got stuck with brown eyes

Question 5

Genotype

Answer 5

the genotype refers to the entire set of genes in a cell, an organism, or an individual, which combination of alleles do you have?

Question 6

Phenotype

Answer 6

the set of observable characteristics of an individual resulting from the interaction of its genotype with the enviroment, result in trait, what colour it actually is

Question 7

Homozygous

Answer 7

refers to having identical alleles for a single trait

only use for individuals

Question 8

Heterozygous

Answer 8

• refers to a pair of genes where one is dominant and one is recessive, they’re different
• like all words with the prefex hetero, this has to do with things that are different

(only use for individuals)

Question 9

Monohybrid Cross

Answer 9

a genetic cross between parents that differ in the alleles they possess for one particular gene, one parent having two dominant alleles and the other two recessives