B13-reporduction

Question 1

what process of division is involved in asexual reproduction

Answer 1

mitosis

Question 2

what is a cells with 23 chromosomes called

Answer 2

haploid

Question 3

what is a cell with 46 chromosomes called

Answer 3

diploid

Question 4

difference between mitosis and meiosis when the cell divides

Answer 4

2 diploid cells- mitosis(identical daughter cells)
4 haploid cells-meiosis

Question 5

what is the genome

Answer 5

the entire genetic material of an organism

Question 6

role of gene

Answer 6

small section of DNA on a chromosome. each gene codes for a particular sequence of amino acids to make a specific protein

Question 7

homozygote

Answer 7

2 identical alleles

Question 8

hetrozygote

Answer 8

diffrent alleles for a characteristic

Question 9

genotype

Answer 9

alleles present or genetic makeup of an individual

Question 10

phenotype

Answer 10

physical appearance of an individual regarding a particular characteristic

Question 11

what are alleles

Answer 11

alternative forms of a gene

Question 12

female sex chromosomes

Answer 12

XX

Question 13

Male sex chromosomes

Answer 13

XY

Question 14

what is polydactil caused by

Answer 14

a dominant phenotype caused by a dominant allele which can be inherited from one or both parents

Question 15

what is cystic fibrosis caused by

Answer 15

a recessive phenotype that is caused by recessive alleles which must be inherited by BOTH parents

Question 16

Name 2 types of screening for genetic disorders by screening embryos

Answer 16

Chronic villas sampling transcervical method
Chronic villas sampling transabdominal method
Amniocentesis

Question 17

What period of the pregnancy is amniocentes carried at

Answer 17

15-16 weeks

Question 18

What is amniocentes

Answer 18

Taking fluid from around the developing fetus which contains fetal cells to be screened

Question 19

What period of the pregnancy does chronic villus sampling take place

Answer 19

10 12 weeks

Question 20

How does chronic villas sampling work

Answer 20

Small sample of tissue from the developing placenta provides fetal cells to screen

Question 21

How is screening carried out

Answer 21

Cells collected
Dna isolated from embryo and tested fro diffrent genetic disorders.