Mandelian Inheritance

Question 1

What is a trait

Answer 1

A version of an inherited characteristic

Question 2

Who performed expirements on pea plants, helping us discover traits

Answer 2

Gregor Mendel

Question 3

Why were pea plants a good choice to study

Answer 3

-They reproduce quickly
-Have both male and female reproductive organs
-Can asexual and sexually reproduce

Question 4

What 7 traits did mendel study

Answer 4

-Seed shape (Round or wrinkled)
-seed colour (Yellow or green)
-pod shape (Inflated or constricted)
-pod colour (Yellow or green)
-flower position (Axial or terminal)
-flower colour (Purple or white)
-and stem length (Short or tall)

Question 5

What did mendel do in his experiment

Answer 5

-Cross fertilized purple and white flowers (P gen)
-Got all purple flowers (F1 gen)
-Self fertilized the purple flowers
-Got white and purple flowers (F2 gen)
-Realized he kept getting a 3:1 ratio

Question 6

Why were all the flowers in F1 generation purple

Answer 6

Because the purple flower trait is dominant and the white is recessive

Question 7

Dominant traits are represented as ________

Answer 7

Capital letter (ex: HH or Hh)

Question 8

Recessive traits are represented as _________

Answer 8

Lower case letters (ex: hh)

Question 9

What is homozygous dominent

Answer 9

A genotype with the same alleles (ex: AA or aa)

Question 10

What is heterozygous dominent

Answer 10

A genotype with different alleles
(ex: Aa)

Question 11

What is an allele

Answer 11

Each copy of the trait, one allele comes from each parent

Question 12

What is genotype

Answer 12

The genetic makeup of an individual

Question 13

What is phenotype

Answer 13

The physical appearance of a gene
(ex: blue eyes)

Question 14

How can we predict inheritance of alleles

Answer 14

Punnett squares

Question 15

What is a punnett square

Answer 15

Diagram that shows all possible genotypes from a cross between 2 individuals

Question 16

How do we use punnett squares to solve problems?

Answer 16

1. Find out the genotypes of parents
2. Draw punnett square with parents genotype on top and the other on the side
3. Fill in the boxes of the punnett square by combining the letters of each row and column
4. Write the genotypes and phenotypes on the side

Question 17

What is a monohybrid cross

Answer 17

A cross that shows the possible offspring for 1 trait

Question 18

Can there be 2 dominant alleles for a trait

Answer 18

No, there can only be one dominant and one recessive

Question 19

A pea plant, which is homozygous cor the dominant axial flower is crossed with a pea plant with terminal flowers. Draw a punnett square to illustrate the genotypic ratio and phenotypic ratio

Answer 19

Genotypes: 100% Ff
Phenotypes: 100% Axial flowers