mitosis

Question 1

what is mitosis

Answer 1

mitosis produces two daughter cells that are identical to the parent cell. this is the type of cell division involved in growth and repair of the body

Question 2

different stages of mitosis

Answer 2

interphase -
chromosomes replicate to have two chromosomes
prophase-
replicated chromosomes and their chromatids become visible
metaphase -
replicated chromosomes line up along the equator of the cell
anaphase-
the chromatids seperate and move to opposite poles of the cells
telophase-
two nuclei form, each with the same number of chromosomes as the parent

Question 3

what is meiosis

Answer 3

meiosis is the process of the cell division that produces the gametes sperm and eggs

Question 4

stages of meiosis

Answer 4

metaphase 1
replicated chromosomes form homologous pairs attached to spindle fibres and lined up in middle
anaphase 1
one replicated chromosome of each pair moves to each pole
telophase 1
two cells are formed each with one replicated chromosome
metaphase 11
chromosomes line up on the equator attached to spiel fibres
anaphase 11
chromatids seperate and move to poles
telophase 11
four cells result with one copy of each chromosome they are haploid gametes

Question 5

centromere

Answer 5

the point on a chromosome where the two chromatids are joined together

Question 6

gametes

Answer 6

sperm and eggs

Question 7

genetically modified

Answer 7

having the genes changed

Question 8

genotype

Answer 8

genetic information carried by and individual

Question 9

sex lined genes

Answer 9

genes prensent on the sex chromosome

Question 10

genetics

Answer 10

genetics is the study of inherited characterises called traits. in natural population all the individuals are genetically different- they have different traits. however some patterns of inheritance of these traits can be identified

Question 11

heredity

Answer 11

the passing of physical or mental characteristics genetically form one generation to another

Question 12

gene

Answer 12

a section of dan that carries the genetic cod4 for a particular characteristics

Question 13

allele

Answer 13

different forms of the same gene located at the same point on the homologous chromosomes

Question 14

homozygous

Answer 14

having two identical alleles on the homologous chromosomes

Question 15

heterozygous

Answer 15

having two different alleles oh a homologous chromosome

Question 16

what is the relationship between a gene and an allele

Answer 16

the relationship between a gene and an allele is that a gene sequence of DNA that cane translated into protein whereas an allele is a version of a gene. we have two alleles of every gene, located on the same spot on different chromosomes.