Genetics Flashcards

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1
Q

What is variation

A

Differences

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2
Q

What is continuous variation in chromosomes give an example

A

Continuous variation
- described differences which vary over a huge range of values like eight and hight are examples

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3
Q

What is discontinuous variation in chromosomes give an example

A

discontinuous variation
- described differences within a distinct opinion (you can have one or another ). blood groups, eye colour and tongue rolling are examples

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4
Q

What is a phenotype

A

An appearance of an organism

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5
Q

What helps predict the chances of what characteristic children well have from the genes of two parents

A

The punnet squares

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6
Q

If parent one has black hair ( BB ) and the other parent has red hair ( bb )

What are the chances that any of the children will have red hair

A

All children Born will have black hair and genotype Bb

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7
Q

If black hair is dominated to red hair is it

B = black hair
B = red hair
Or
R= black hair
R= red hair

A

Capital B

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8
Q

How many sets of chromosomes dose the male sex cell Contain

A

One set

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9
Q

What number of chromosomes dose the female sex cell contain

A

23

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10
Q

do chromosomes exist in pairs

A

Yes

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11
Q

How dose chromosomes Cary their code

A

In the DNA

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12
Q

Where are chromosomes stored in

A

The nucleus

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13
Q

What are chromosomes divided into

A

Sections

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14
Q

Give an example of a gene

A

Tells the body to have brown hair

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15
Q

What do chromosomes contain

A

Long chains of DNA

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16
Q

How much cells to human bodies contain

A

46 ( 23 pairs)

17
Q

Give me the two types of genes

A

Dominant and recessive

18
Q

What is homozygous

A

An organism which has inherited two genes which are the same is said to be homozygous

19
Q

Whats another word for homozygous

A

True breeding

20
Q

If the pea plant gene is

TT -> tall

Is it heterozygous ( bonus question what is it )

A

No
It’s homozygous

21
Q

What is heterozygous

A

An organism which has inherited two different genes is said to be heterozygous

22
Q

Excluding coat colour and ear lobe type give three DIFFRENT examples of an inherited characteristics in a) animals b) humans c) plant

A

A) eye colour b) finger print c) if produces fruit