Inheritance

Question 0

What are genes

Answer 0

Sections of chromosomes they are made up of DNA and code for specific characteristics.

Question 1

What are alleles?

Answer 1

Different version of the same gene

Question 2

What are chromosomes

Answer 2

Long length of DNA coiled up into stick like structures. We have 23 pairs and 46 in total.

Question 3

What is the definition of species?

Answer 3

A group of organisms that are similar and can interbreed and produce fertile offspring.

Question 4

What are Gametes

Answer 4

Sex cells - only cells with 23 chromosomes

Question 5

What is a phenotype

Answer 5

The characteristic expressed is the phenotype

Question 6

What is a gentotype

Answer 6

The allele pair for each characteristic

Question 7

What does homozygous mean

Answer 7

Both alleles are either dominant or receive.

Question 8

What does heterozygous mean

Answer 8

One dominant allele and one recessive allele.

Question 9

What is homozygous recessive

Answer 9

ss

Question 10

What is homozygous dominant

Answer 10

SS

Question 11

What is the symbol of the faulty allele for sickle cell anaemia

Answer 11

SS - unaffected
Ss - carrier
ss - affected

Question 12

Name 2 genetic diseases

Answer 12

Sickle cell anaemia

Cystic fibrosis

Question 13

What is the symbol of the faulty allele for cystic fibrosis

Answer 13

FF - unaffected
Ff - carrier
ff - affected

Question 14

Name 5 symptoms of cystic fibrosis

Answer 14

Persistent coughing
Excess production of saliva 
Excess production of thick sticky mucus
Wheezing
Shortness of breath doing ordinary things 
Problem digesting food because enzymes aren't released
Fats aren't digested properly 
Clubbed fingers

Question 15

What treatment can you get for sickle cell anaemia

Answer 15

Blood transfusion

Question 16

What treatment can you get for cystic fibrosis

Answer 16

Physiotherapy
Drugs
Gene therapy (in the future)

Question 17

What are the symptoms of sickle cell anaemia

Answer 17

tired / lethargic (1)
short of breath / reduced oxygen carrying capacity / problems exercising (1)
swelling of hands and feet (1) 
painful / weak joints (1)
blocked blood vessels / blood clots(1)