Genetics & Inheritance 1

Leaving Certificate Biology

€ 100

€ 200

€ 300

€ 500

€ 2,000€ 1,000

€ 4,000

€ 8,000

€ 16,000

€ 32,000

€ 64,000

€ 125,000

€ 250,000

€ 500,000€1,000,000

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For €100: Who is regarded as the father of genetics?

A B

C D

Punnett Mendel

Harvey Fleming

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B: Mendel

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For €100: Who is regarded as the father of genetics?

A B

C D

Punnett Mendel

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40

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60

70

A B C D

A

B

C

D

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• I’m 80% certain that it's … B

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For €200: Alternative forms of a gene are known as …

A B

C D

Autosomes Alleles

Junk genes Heterosomes

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B: Alleles

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For €200: Alternative forms of a gene are known as …

A B

C D

Alleles

Junk genes

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0102030405060708090

100

A B C D

A

B

C

D

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• That’s definitely B

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For €300: The diploid number of chromosomes

is restored as a result of …

A B

C D

Mitosis Meiosis

Gamete formation Fertilisation

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D: Fertilisation

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For €300: The diploid number of chromosomes

is restored as a result of …

A B

C DGamete formation Fertilisation

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4050

6070

8090

100

A B C D

A

B

C

D

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• It has to be D Chris

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Linkage

For €500: Which of the following refers to the

formation of an intermediate phenotype from the heterozygous condition?

A B

C D

Incomplete dominance

Independent assortment

Segregation

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A: Incomplete dominance

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For €500: Which of the following refers to the

formation of an intermediate phenotype from the heterozygous condition?

A B

C D

Incomplete dominance

Independent assortment

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A B C D

A

B

C

D

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• It’s definitely A Chris

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For €1,000: Alleles are not found in pairs in …

A B

C D

Fertilised eggs Muscle cells

Nerve cells Sperm cells

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Congratulations

D: Sperm cellsYou have won €1,000.00

19 Apr 2023

The Contestant

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For €1,000: Alleles are not found in pairs in …

A B

C DNerve cells Sperm cells

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A B C D

A

B

C

D

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• I really don’t know this one, just let me think ...

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For €2,000: The physical appearance of an individual

as a result of the interaction of the genotype with the environment is called the …

A B

C D

Gene expression Phenotype

Genotype Gene pharming

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B: Phenotype

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For €2,000: The physical appearance of an individual

as a result of the interaction of the genotype with the environment is called the …

A B

C D

Phenotype

Genotype

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101520253035404550

A B C D

A

B

C

D

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• I am not sure, I’d chance B

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For €4,000: Which of the following are possible

gametes from TTRr?

A B

C D

TR, Tr TT, Rr

TT, TR TT, Tr

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A: TR, Tr

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For €4,000: Which of the following are possible

gametes from TTRr?

A B

C D

TR, Tr TT, Rr

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101520253035404550

A B C D

A

B

C

D

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• I am not sure, I would guess A

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For €8,000: A person with blood type A may receive a transfusion of which type(s) of blood?

A B

C D

A & AB A & O

AB & O AB

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B: A & O

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For €8,000: A person with blood type A may receive a transfusion of which type(s) of blood?

A B

C D

A & O

AB & O

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60

70

80

A B C D

A

B

C

D

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• It is definitely A ... Wait a minute it may be C

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For €16,000: Which of the following is a cross which results in 75% of the progeny having

the dominant phenotype?

A B

C D

TT x tt Tt x tt

Tt x Tt TT x Tt

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C: Tt x Tt

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For €16,000: Which of the following is a cross which results in 75% of the progeny having

the dominant phenotype?

A B

C D

Tt x tt

Tt x Tt

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40

50

60

70

80

A B C D

East

A

B

C

D

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• I know this one, it's … B, I think

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For €32,000: The process of changing the information

in a gene into a protein and the effect that protein has on the organism is called …

A B

C D

Gene pharming Genotype

Gene expression Phenotype

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C: Gene expression

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19 Apr 2023

The Contestant

€ 32,000.00Thirty two thousand euro only

Next Question

For €32,000: The process of changing the information

in a gene into a protein and the effect that protein has on the organism is called …

A B

C D

Gene pharming

Gene expression

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05

101520253035404550

A B C D

A

B

C

D

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• I believe it is … A

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For €64,000: Two heterozygous tall plants, each with

a recessive gene for dwarfism, are crossed. What proportion of their offspring will be dwarf?

A B

C D

1 in 2 1 in 4

1 in 3 1 in 8

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B: 1 in 4

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For €64,000: Two heterozygous tall plants, each with

a recessive gene for dwarfism, are crossed. What proportion of their offspring will be dwarf?

A B

C D

1 in 2 1 in 4

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05

101520253035404550

A B C D

A

B

C

D

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• Hello, it's Chris Tarrant on Who wants to be a millionaire, this question is for €64,000.

• It’s either A or B, I’m 100% certain of that.

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For €125,000: A normal man marries a woman who is a carrier of the recessive haemophilia gene,

which is sex-linked. What proportion of their offspring could have the condition?

A B

C D

1 in 2 1 in 4

1 in 6 1 in 8

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B: 1 in 4

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For €125,000: A normal man marries a woman who is a carrier of the recessive haemophilia gene,

which is sex-linked. What proportion of their offspring could have the condition?

A B

C D

1 in 2 1 in 4

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05

101520253035404550

A B C D

A

B

C

D

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• Hello, it's Chris Tarrant on Who wants to be a millionaire, this question is for €125,000.

• I know this? Is it B?

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For €250,000: What term is given to pieces of DNA that

do not code for a protein and seem to have no function other than to separate genes?

They are also known as junk genes.

A B

C D

Interons Genotype

Exons Phenotype

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C: Exons

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For €250,000: What term is given to pieces of DNA that

do not code for a protein and seem to have no function other than to separate genes?

They are also known as junk genes.

A B

C D

Interons

Exons

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A B C D

A

B

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• I know it. Oh! Chance C or D

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For €500,000: A colour-blind man marries a woman with

normal vision, whose father was colour blind. What are the chances that a son of theirs

will be colour-blind?

A B

C D

75% 100%

25% 50%

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D: 50%

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For €500,000: A colour-blind man marries a woman with

normal vision, whose father was colour blind. What are the chances that a son of theirs

will be colour-blind?

A B

C D25% 50%

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30

A B C D

A

B

C

D

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• I think it is C or D. I’m nor sure which. Take a chance on D.

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For €1,000,000: What ratio would you expect in a dihybrid cross between a parent heterozygous for both traits and a parent homozygous recessive for both

traits (Independent assortment occurs).

A B

C D

9:3:3:1 1:1:1:1

1:1 3:1

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Congratulations

You are a Millionaire!

19 Apr 2023

The Contestant

€ 1,000,000.00One million euro only

For €1,000,000: What ratio would you expect in a dihybrid cross between a parent heterozygous for both traits and a parent homozygous recessive for both

traits (Independent assortment occurs).

A B

C D

9:3:3:1 1:1:1:1

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0

5

10

15

20

25

A B C D

A

B

C

D

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• Hello, it's Chris Tarrant on Who wants to be a millionaire, this question is for €1,000,000.

• I do not have a clue I’m afraid

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WRONG ANSWER

Hard Luck

You leave with nothing

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WRONG ANSWER

Hard Luck

You leave with a cheque for €1,000.00

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19 Apr 2023

The Contestant

€ 1,000.00One thousand euro only

WRONG ANSWER

Hard Luck

You leave with a cheque for €32,000.00

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19 Apr 2023

The Contestant

€ 32,000.00Thirty two thousand euro only