Genetics

Question 0

Who is Gregor Mendel

Answer 0

The father of modern genetics

Question 1

What is genetics

Answer 1

He branch in biology that deals with the ways hereditary information is transmitted

Question 2

Why did mendel choose peas?

Answer 2

Because they were easy to grow, matured quickly, and ha several pairs of sharply contrasting traits, and its natural method of pollination

Question 3

What is the law of dominance

Answer 3

When an organism is hybrid for a pair of contrasting traits it shows only the dominant trait

Question 4

What is a trait

Answer 4

A variation of a particular characteristic

Question 5

What is cross fertilization

Answer 5

Cross-sperm from the pollen of one flower fertilizes the eggs in the flower of a different plant

Question 6

What is a particulate hypothesis

Answer 6

States that parebts pass on to their offspring seperate and distinct factors that are responsible for inherited traits

Question 7

What is the Blending hypothesis

Answer 7

States how offspring inherit traits from both parents

Question 8

What is self fertilization

Answer 8

When a breeding plant produces offspring identical to itself

Question 9

What is the law of segregation

Answer 9

The idea that factors that occur in pairs are separated from each other during gamete formation and recombine at fertilization

Question 10

What is another name for Alleles

Answer 10

Genes

Question 11

What are Alleles

Answer 11

Different copies or forms of a gene controlling a particular trait

Question 12

What is a Homozygous organism

Answer 12

An organism in which the alleles for a certain trait are the same

Question 13

What are homozygous alleles

Answer 13

Pure

Question 14

What are heterozygous alleles

Answer 14

Hybrids

Question 15

What is a heterozygous organism

Answer 15

An organism in which the alleles for a certain trait are different

Question 16

What is a genotype

Answer 16

The genetic makeup of an organism

Question 17

What is the genotype represented by

Answer 17

Letters

Question 18

What is a phenotype

Answer 18

The physical trait an organism develops as a result of its genotype

Question 19

What is the law of independent assortment

Answer 19

Different traits are inherited independantly of one another

Question 20

What is a monohybrid cross

Answer 20

Crossing two parents who are hybrid of the same traits

Question 21

What is a testcross

Answer 21

A type of cross that you do to tell if an organism is pure or hybrid

Question 22

Hybrid

Answer 22

Two different breeding varieties

Question 23

Dominant allele

Answer 23

When Only one of the alleles affect the trait

Question 24

Recessive

Answer 24

It does not effect the trait

Question 25

F1 generation

Answer 25

Hybrid offspring of the p generation

Question 26

P generation

Answer 26

Parental plants

Question 27

F2

Answer 27

Offspring of f1 generation

Question 28

Punett square

Answer 28

Shows all possible outcomes of a genetic cross

Question 29

Dihybrid cross

Answer 29

Crossing organisms differing in two charachters

Question 30

Principle of independant assortment

Answer 30

States that during gamete formation in an f2 cross a particular allele can be paired woth either allele of another charahter

Question 31

Internediate inheritance

Answer 31

When the heterozygotes have a phenotype that is intermediate between the phenotype of the two homozygous

Question 32

Codominance

Answer 32

Two dominant alleles are expressed at the same time

Question 33

Polygenic inheritance

Answer 33

When two or more genes effect a single character

Question 34

Chromosome theory of inheritance

Answer 34

States that genes are located on chromosomes and the behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns

Question 35

Gene locus

Answer 35

The alleles of a gene in the same location

Question 36

Genetic linkage

Answer 36

The tendancy for alleles on one chromosome to be inherited together