Unit 3: Mendelian Genetics

Question 1

What would be the gametes from the following parent

TtHH

Answer 1

• TH
• TH
• tH
• tH

Question 2

What is true-breeding

Answer 2

another name for homozygous

Question 3

What method is used to determine the gametes of a parent in a dihybrid

Answer 3

FOIL

• First
• Outside
• Inside
• Last

Question 4

Possible numbers in a genotype ratio of a monohybrid cross

Answer 4

3

_:_:_

Question 5

How many numbers are there in a phenotypic ratio of a monohybrid cross?

Answer 5

2

___: ____

Question 6

Another name for homozygous

Answer 6

purebred

Question 7

What is an allele

Answer 7

Type of gene

Question 8

When determining the parent gametes in a dihybrid, which of Mendel’s laws applies?

Answer 8

Law of independent assortment

(alleles for different traits sort independently of one another into separate gametes)

Question 9

What are gametes

Answer 9

Sex cells

Question 10

What is fertilization

Answer 10

Male and female reproductive cells joining

Question 11

genetic makeup of an organism

Answer 11

genotype

Question 12

Another name for heterozygous

Answer 12

Hybrid

Question 13

Father of genetics

Answer 13

Gregor Mendel

Question 14

What are hybrids

Answer 14

heterozygotes

Question 15

What is a phenotype

Answer 15

Physical attributes

Question 16

Formula for percent deviaiton?

Answer 16

(Sum of the differences between expected and observed)

____________________________________________

totall # of occurances

then multiple by 100 to get a %

Question 17

Formula for probability

Answer 17

1 / total number of occurance

Question 18

Physical apperance due to the expression of a genotype

Answer 18

Phenotype

Question 19

Type of cross involving the crossing of one trait at a time

Answer 19

monohybrid

Question 20

How many alleles are found in a parent genotype in a dihybrid cross?

Answer 20

4

Question 21

What is the formula for the phenotypic ratio for a monohybrid cross?

Answer 21

Most dominant phenotype: Most recessive

Question 22

Number of gametes from each parent during a monohybrid

Answer 22

2

Question 23

What are different ways that probabiltiy can be expressed?

Answer 23

• decimal
• fraction
• %
• ratio

Question 24

What is genetic segregation

Answer 24

Separation of alleles

Question 25

What is an example of homozygous recessive

Answer 25

tt

Question 26

How many traits are crossed in a dihybrid?

Answer 26

2

Question 27

What did Mendel first experiment with

Answer 27

Pea plants

Question 28

Law that explains how alleles segrate during a gamete formation

Answer 28

Law of Segregation

Question 29

How many alleles are in a parent gamete in a dihybrid?

Answer 29

2

( on from each trait)

Question 30

What are alleles

Answer 30

Different forms of a gene

Question 31

What is the formula for a dihybrid phenotypic ration

Answer 31

DD : Dr : rD : rr

Question 32

What are genes

Answer 32

Chemical factors that determine traits

Question 33

What is an example of a heterozygous

Answer 33

Tt

Question 34

Genotype with the same form of the allele

Answer 34

Homozygous

Question 35

Genotype with different forms of the allele

Answer 35

Heterozygous

Question 36

Chance of an event occuring

Answer 36

Probability

Question 37

Up to how many numbers are there in a phenotypic ratio for a dihybrid?

Answer 37

4

Question 38

What is an example of homozygous dominant

Answer 38

TT

Question 39

Order of the genotypic ratio of a monohybrid

Answer 39

_Homozygous dominan_t: Hetero: Homozygous recessive

Question 40

What is genetics

Answer 40

The study of heredity