genes and inheritnace

Question 1

zygote

Answer 1

fertilised egg cell

Question 2

gametes

Answer 2

sex cell

Question 3

genome

Answer 3

the DNA of an organsim

Question 4

DNA

Answer 4

the instructions for an organism, found as a code in a molecule

Question 5

genes

Answer 5

a section of DNA with a code to make protiens

Question 6

diploid

Answer 6

contains 2 sets of chromosines,46,(2n)

Question 7

haploid

Answer 7

contains 1 set of chromosones,23,(n)

Question 8

fertiliasatoin

Answer 8

two gametes fused together

Question 9

phenotype

Answer 9

the PHysical charlecteristics of an organism
- genes + enviroment = phenotype

Question 10

what does a nucleus contain

Answer 10

DNA

Question 11

what does DNA form when coiled up

Answer 11

forms a long molecule called chromosones

Question 12

what is a section of a DNA called

Answer 12

gene

Question 13

what is a gene made of

Answer 13

made of a molecule called DNA

Question 14

what is the structure of a DNA

Answer 14

double helix

Question 15

what does DNA stand for

Answer 15

Deoxyribo Nuclie Acid

Question 16

polymer

Answer 16

repeting unit

Question 17

what is DNA made up of

Answer 17

made up on lots of monomers called ‘ nucleotides’ bonded together

Question 18

what are the three parts of a nucleotide called

Answer 18

circle- phosate group
rectangle- base
hexigon- ribose structure

Question 19

what are the four different bases of a nucleotide and what ones match up together

Answer 19

AT GC
A and T alwyas match up and G and C alwyas match up

Question 20

what bond form between nucleotide bases

Answer 20

weak hydrogen bonds

Question 21

allele

Answer 21

another version of a gene

Question 22

how many copys of each gene do humans have

Answer 22

2 copys - one from eahc parent

Question 23

what can alleles be

Answer 23

can be domianant (A) or ressesive (a)

Question 24

if there is a dominant allele and a resesive allele which one will be expressed in the phenotype

Answer 24

dominant

Question 25

what happens if you have 2 ressesive genes

Answer 25

you inherate the ressesive gene if there is no dominant allele present

Question 26

what happens if you have one of each allele

Answer 26

you will inherate the dominant allele

Question 27

what chromosones to males have

Answer 27

XY chromosones - sperm cells

Question 28

what chromosones do females have

Answer 28

XX chromosone - egg cell

Question 29

what are egg and sperm cells known as

Answer 29

gametes

Question 30

homozygus

Answer 30

two of the same alleles

Question 31

heterozygous

Answer 31

two different alleles