Genetics Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Eg of inherited characteristics

A

Eye colour
Length of eyelashes
Shape of shape
Blood group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are inherited characteristics

A

Those that’s are passes from parent to child by genes during sexual reproduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Eg of non inherited characteristics

A

Ability to speak languages
An interest in a sport
Writing
Riding a bike

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Hat are non inherited characteristics

A

They are characteristics that are learned during life and can be influenced by the environment. They are not controlled by genes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are chromosomes

A

Thread like structures made of DNA AND PROTEIN found in the nucleus of cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are genes

A

Short sections of DNA located on chromosomes

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Hat is the function of genes

A

They control the production of inherited characteristics. One gene will instruct the cell to make the haemoglobin in the blood and another will form the colour of the eye

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How many chromosomes in a normal body cell

A

46 (2 sets of 23)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How many chromosomes in a sex cell

A

23

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why do sex cells only have 23 cells

A

The special type of cell division that forms sperm and egg results in the number of chromosomes being halved so they only carry 23 chromosomes.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Why does the zygote have 46 cells and can split and still have 46

A

At fertilisation, the sperm and egg unite creating a single cell called a zygote. This means it has the normal number of 46 chromosomes, half from the mother and half from the father. A different type of cell division forms in the zygote which allows each new cell to have the same amount of chromosomes as the parent cell.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Why might some children have characteristic that resemble their parents

A

Because each person inherits half of their chromosomes (and genes) from their mother and half from their father

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is genetics

A

The study of how traits or characteristics are inherited

How well did you know this?
1
Not at all
2
3
4
5
Perfectly