Designer Babies Yr10 Science

Question 1

Define cervix

Answer 1

The opening or neck of the uterus at the top of the vagina

Question 2

Define vagina

Answer 2

Connects the cervix to the outside of the body, sperm is deposited here during sex

Question 3

Define ovum

Answer 3

The female sex cell, egg

Question 4

Define ovary

Answer 4

After puberty an egg or ovum is released from here every 28 days or so

Question 5

Define oviduct

Answer 5

Carries ovum from the ovary to the uterus also called Fallopian tube

Question 6

Define uterus

Answer 6

Womb, where the fertilised egg implants

Question 7

Define sperm

Answer 7

The male sex cell it is adapted to swim from the vagina to the egg

Question 8

Define testes

Answer 8

After puberty they make sperm continuously

Question 9

Define scrotum

Answer 9

A sac of skin that holds the testes

Question 10

Outline the route taken from the testes by the sperm as it leaves the body

Answer 10

Testes..epididymis..vas deferens..urethra..vagina..following tubes where it fertilisers an egg

Question 11

Define genotype and phenotype

Answer 11

Our genetic makeup, the sum total of our genes is called a genotype, but the characteristics which show up in our appearance ar called a phenotype

Question 12

Define alleles

Answer 12

An allele is one the possible forms of a gene. Most genes have two alleles a dominant allele and a recessive allele

Question 13

Define homozygous

Answer 13

The genes are the same

Question 14

Define heterozygous

Answer 14

The genes are different

Question 15

How many pairs of chromosomes are in every human cell

Answer 15

23 pairs because half come from dad half from mum

Question 16

What are gametes

Answer 16

Egg cells and sperm cells, each gamete contains half of the parents 46 chromosomes one of each pair

Question 17

What is a gene

Answer 17

A gene is a section of DNA which codes for a specific characteristic eg. Hair colour

Question 18

What are differences between dominant and recessive genes

Answer 18

recessive gene only shows if there are two copies. Dominant gene means there are two different genes but 1 gene dominates over the other

Question 19

What is mitosis?

Answer 19

When a diploid cell divides the resulting daughter cells receive a perfect copy of their parents cell chromosomes.

Question 20

What is meiosis?

Answer 20

Meiosis occurs in the cells of the ovaries and testes, producing gametes that only contain one of each type of chromosome

Question 21

When a sperm and a egg meet, what is the process called?

Answer 21

Fertilization