Chapter 9

Question 0

Whats a mono hybrid

Answer 0

A cross involving 1 trait

Question 1

Whats a dihybrid

Answer 1

A cross involving 2 characteristics

Question 2

Whats homozygous

Answer 2

Describes an organism with identical alleles for a trait

Question 3

Whats a haploid

Answer 3

A cell that contains one set of chromosomes

Question 4

Heredity

Answer 4

Biological inheritance

Question 5

Whats genetics

Answer 5

The branch of biology that studies heredity

Question 6

Whats heterozygous

Answer 6

Describes an organism with two different alleles for a trait

Question 7

Phenotype

Answer 7

Physical appearance of an organism

Question 8

Genotype

Answer 8

Genetic makeup of organisms, represented by TT or Tt or tt

Question 9

Cross-pollination

Answer 9

The transfer of pollen grains from one plant to the pistil of a second plant

Question 10

Self-pollination

Answer 10

The transfer of the male pollen grain (produced on the anther) to the female organ of the plant (pistil)

Question 11

Incomplete dominance

Answer 11

One allele does not completely mask the other allele resulting in an intermediate phenotype

Question 12

Codominance

Answer 12

Both alleles for a gene are expressed in a heterozygous phenotype

Question 13

Complete dominance

Answer 13

The dominant allele completely masks the effect of the recessive allele when heterozygous

Question 14

Homozygous allele example

Answer 14

TT

Question 15

Heterozygous allele ex

Answer 15

Tt

Question 16

Phenotype ex

Answer 16

8 spotted
8 not spotted

75% brown
25% blue

Question 17

Genotype ex

Answer 17

8 TT

8 Tt

Question 18

Dominant ex

Answer 18

T is dominant, Tt

Question 19

Recessive ex

Answer 19

t is recessive, tt

Question 20

Want goes on the outside of a punnet square

Answer 20

The parent genotypes

Question 21

What goes inside the punnet square

Answer 21

The possible offspring genotypes

Question 22

How do you represent dominant traits, recessive?

Answer 22

Capital letters, lower case letters

Question 23

Name Mendels three laws and describe

Answer 23

1. Law of dominance - some forms of a gene are expressed if present (meaning they are dominant) other forms of a gene are expressed only if there is no dominant allele present (meaning they are recessive)
2. Law of segregation- the pair of alleles for each trait are separated during the formation of reproductive cells in meiosis
3. Law of independent assortment- genes for different traits may sort independently of each other

Question 24

Who was Gregor Mendel

Answer 24

Austrian monk, worked with garden peas, lived in the mid 1800s, established the Fundamental Laws of Modern Genetics, called the Father of Modern Genetics

Question 25

What are purebred plants, how do you make them

Answer 25

Plants that self pollinate, who receive all their traits from a single parent, they produce offspring identical to themselves

Question 26

Mendel found that each parent contributes a gene for each trait to its offspring, what do we call the gene pairs

Answer 26

Alleles

Question 27

What are hybrids, how are they produced

Answer 27

Organisms produced by crossing parents with differing characteristics (crossed purebreds make them)

Question 28

Know how to do

Answer 28

Mono hybrid punnet squares

Question 29

Know how to do

Answer 29

Dihybrid punnet squares

Question 30

Know the

Answer 30

Parts of a flower