reproduction and genetics

Question 1

Name the male gamete in plants and animals

Answer 1

In plants: Pollen (sperm cells inside)
In animals: Sperm

Question 2

name the female gamete in plants and animal

Answer 2

both = egg

Question 3

which type of cell division is involved in the production of gametes?

Answer 3

Meiosis

Question 4

Name the type of cell division used in asexual reproduction.

Question 5

Explain how fertilised egg cell has the correct calls has the correct number of chromosomes.

Answer 5

Mitosis

Question 6

Asexual and sexual reproduction are very different methods.
Give four ways in which asexual reproduction is different to sexual reproduction.

Question 7

where in the body does meiosis takes place?

Answer 7

In the testes (males) and ovaries (females).

Question 8

what happens to the DNA at the very start of meiosis, before the cell starts to divide?

Question 9

How many cell divisions are there during the process of meiosis ?

Question 10

Briefly describe the result of meiosis

Question 11

How many copies of each chromosomes does the resulting cell have?

Question 12

After the two gametes join to produce a fertilised egg, the cells divide repeatedly.
What type of cell division do these cell undergo?

Question 13

The dividing cells form an embryo.
What happens to the cells in the embryo as it develops in order to form the whole organism

Question 14

tell me about malaria sexual and asexual reproduction.

Question 15

Daffodils can reproduce by producing seeds or bulbs. Bulbs divide to form new plants.
What type of reproduction is shown when the bulb divide to produce new plants?

Question 16

state 2 advantages of asexual reproduction over sexual reproduction

Question 17

An unfavourable environmental change affects a population of organisms .
Explain why sexual reproduction increases the chance of the population surviving.

Question 18

how many chromosomes are there in a normal body cell?

Question 19

How can you tell that the allele for the disease is not dominant?

Question 20

what are the symptoms of polydactyly?

Question 21

A person only has to have one allele for polydactyly to have symptoms.
What does this tell you about the allele that causes polydactyly?

Question 22

Even if both parents each carry one copy of the allele that causes cystic fibrosis, there is only a relatively small chance that their offspring will have the disorder. Explain why this is the case.

Question 23

suggest 3 arguments against embryo screening

Question 24

suggest 3 arguments for embryo screening