6B-Science 3

Question 1

Is responsible for the traits that each species possesses:

Answer 1

Heredety

Question 2

How much have chromosomes the humans?

Answer 2

46

Question 3

Wich the inherited traits pass from one generation to other?

Answer 3

Skin color, hair, etc

Question 4

Where located our DNA?

Answer 4

In the chromosomes

Question 5

Have the information that determines the inherited characterristics of the organism.

Answer 5

The Genes

Question 6

The form a gene can take are called…

Answer 6

Alleles

Question 7

What do a dominant allele?

Answer 7

The dominant alleles make the inherited trait appear

Question 8

How represented the dominante allele?

Answer 8

By a capital Letter

Question 9

TRUE OR FALSE?
A recessive allele does NOT TRANSMIT the trait, if the dominant allele is present?

Answer 9

TRUE

Question 10

How represented the recessive allele?

Answer 10

By a lowercase letter

Question 11

Is useful to show the ways alleles from both parents can combine?

Answer 11

The punnett square

Question 12

Is the physical expression of a trait?

Answer 12

The Phenotype

Question 13

Refers to our genetic constitution, makeup or alleles?

Answer 13

The Genotype

Question 14

What is the homozygous? (FF)

Answer 14

when we have two identicall alleles for a given trait.

Question 15

What is the heterozygous? (Ff)

Answer 15

When we have two DIFFERENT alleles for a given trait.

Question 16

What is other name for heterozygous ?

Answer 16

Hybrid

Question 17

What is the Codominance?

Answer 17

When a gene has two or more dominante allele

Question 18

Occurs when one allele is not completely dominant and the organism shows an intermediate traitor blend between the two homozygous case

Answer 18

Incomplete dominance

Question 19

From whom are inherited traits transmitted?

Answer 19

They are transmitted form parents

Question 20

Where do the differences among species finally reside?

Answer 20

In the genes

Question 21

What form each chromosomes?

Answer 21

is formed by genes

Question 22

What is form the genes?

Answer 22

for DNA

Question 23

What is te mean DNA?

Answer 23

Deoxyribonucleic acid

Question 24

What is the mean Biodiversity?

Answer 24

Is the variety of life in the world or in a particular habitat or ecosystem.

Question 25

Who propose the Theory of Evolution ?

Answer 25

Charle Darwin

Question 26

How a scientific theory can be confirmed?

Answer 26

By through observation and experimentation

Question 27

WHat propose Darwin?

Answer 27

Darwin´s hypotosis says that diversity of organism is the result of the evolution.

Question 28

What is the main mechanism of evolution?

Answer 28

The natural selection

Question 29

Allows the stronger organism to survive in a given enviroment

Answer 29

The natural selection

Question 30

________ provide some improved functions through the evolution of a trait

Answer 30

The Adaptations

Question 31

There are three evolution mechanisms?

Answer 31

1-Variation.
2-Natural Selection
3-Time

Question 32

What produce genetic variation?

Answer 32

The mutation and recombination

Question 33

What allow the natural selection?

Answer 33

-Allow the better-adapted organism to survive while other are eliminated.

Question 34

When overproduction of offspring occurs?

Answer 34

When they have too many babies

Question 35

What is the competition?

Answer 35

Is when several species may depend on the same resources.

Question 36

The environmental changes includes two aspects:

Answer 36

1.-One refers to changes, such as lack of food.
2.-The other is that these changes lead to evolutionary adaptations