Biology Answers

1.In Onion, what cellular part must form to fully complete mitosis and cell division?

2.What is the most observed miototic stage during the onion root tip experiment.

1.   Approximately, how many mass extinction events occurred throughout the evolutionary history of animals?

A.   3

B.   4

C.  5

D.  More than 5

2.      Until recent discoveries suggested otherwise, animals existing before the Cambrian period were believed to be____?

A.     Small and ocean dwelling

B.     Small and no motile

C.     Small and soft-bodied

D.     Small and radially symmetrically

3.      Which of the following mechanism of change was brought by the exchange of genes during the process of meiosis that leads to the formation of new gametes that are different form its parent?

A.     Mutation

B.     Genetic drift

C.     Natural selection

D.     Recombination

1.you are given the chance to modify a trait of certain plant (pineapple, coconut, corn, rice, manggo, banana, guava).

these are the things that you consider to make a genetically modified organism (GMO)

a. identify special trait

b. identify a source organism

c. identify a target organism

d. identify the modified trait/added trait

e. what benefits would the recombinant organism provide to society?

identify at least 2 desirable or enhanced trait that each of them has. the first one will be given as an example.

EXAMPLE OF PLANTS AND ANIMALS

1.      grapes

2.      guapple

3.      corn

4.      rice

5.      coconut

6.      banana

7.      bittermelon

8.      cow

9.      chicken

10.  pig

DESIRABLE OR ENHANCED TRAIT

1. seedless fruit
   

9.

10.

DNA is directly involved as a template in the following process except

1) Replication

2) Transfection

3) Translation

3) Transcription

4) Mutation

What affects the gray wolves ability to birth their offspring

Since blood cells can't divide then how is karyotyping done?

Discuss the role of gene flow in evolution

Is there any difference between the process of photosynthesis in plants found in the following regions 1.desert 2 area with heavy rainfall 3.moderate temp.and rainfall. Explain in detail,do

write examples of plants found in these conditions.

State why the skin is an organ