reproductive system

Question 1

natural selection rest on 4 things

Answer 1

1 there is variation in the traits of individuals in population
2 some individuals survive and reproduce and some don’t
3 ?
4 ?

Question 2

artificial selection

Answer 2

a breeder selects for desired characteristics

Question 3

asexual

Answer 3

• can reproduce quickly offspring
• identical to the parent
• does not need partner
• favorable traits passed on

Question 4

asexual and sexual similarities

Answer 4

• change ways to reproduce
• increases chances of survival
• can spread quickly to take over an area

Question 5

sexual

Answer 5

• complex structures
• slower
• increases genetic variation
• better chances of survival due to not being identical to parent

Question 6

advantage of asexual reproduction

Answer 6

reproduces quickly offspring intentional to parent

favorable traits passed on to offspring don’t need to find a parking

Question 7

disadvantage of asexual reproduction

Answer 7

no parent toll care

bad genes get passed on

Question 8

advantages of sexual reproduction

Answer 8

parental care more genetic variation center tour six ensure survival diverse complex

Question 9

disadvantages of sexual reproduction

Answer 9

needs to find a suitable mate slower requires complex structure does not reproduce as many offspring’s

Question 10

nucleus

Answer 10

The nucleus is the control center of the cell controls all activities that occur inside the cell and only contains the cells genetic material DNA

Question 11

nuclear envelope

Answer 11

The nuclear envelope contains the nuclear pores that allow things to enter and exit the nucleus

Question 12

nucleolus

Answer 12

the nucleolus makes ribosomes cells ribosomes make proteins

Question 13

chromatic

Answer 13

chromatin is DNA and proteins when the cell is ready to divide the chromatin condenses this get smaller entire and forms chromosomes

Question 14

unicellular

Answer 14

division results in formation of new individuals of the species

Question 15

multicellular

Answer 15

division results in replacement of old or damaged cells example skin cells blood cells

Question 16

mitosis

Answer 16

process by which the nuclear us divides while maintaining some number of chromosomes

Question 17

Chromatin

Answer 17

nuclear DNA and proteins

Question 18

cytokinesis

Answer 18

division of the cytoplasm

Question 19

chromosomes

Answer 19

condensed roles of chromatin that are able to be seen during mitosis

Question 20

Interphase

Answer 20

resting phase

Question 21

prophase

Answer 21

double chromosomes become visible

Question 22

metaphase

Answer 22

middle

Question 23

anaphase

Answer 23

centromeres lined up on the equator

Question 24

telephase

Answer 24

last phase of mitosis

Question 25

cytokinesis

Answer 25

cytoplasm divides to complete the cell division and form a daughter cells both of which are identical to the original cell

Question 26

meiosis

Answer 26

as in meiosis if A cell and wants to make a duplicate copy of itself it first must copy its DNA part of a chromosome

Question 27

DNA

Answer 27

genetic information is stored in DNA

Question 28

chromosomes are made up of DNA and proteins

Answer 28

true

Question 29

The proteins in chromosomes contain genetic information

Answer 29

false

Question 30

DNA is divided into segments call genes

Answer 30

True

Question 31

double helix

Answer 31

A term often used to describe the structure of DNA is double helix

Question 32

DNA

Answer 32

DNA is a double strand of nucleotides

Question 33

what two of the four steady gather? A C G or T

Answer 33

AT GC

Question 34

Amino acids make up

Answer 34

make up proteins

Question 35

proteins make up

Answer 35

DNA

Question 36

DNA makes up

Answer 36

genes

Question 37

genes make up

Answer 37

chromosomes

Question 38

natural selection

Answer 38

environmental conditions determine a population produces the most off-springs