Reproduction And Inheritance

Question 1

Phenotype definition

Answer 1

the physical appearance or characteristic of an organism.

Question 2

Genotype

Answer 2

a set of genes in DNA responsible for unique traits or characteristics

Question 3

Process of micropropagation

Answer 3

1)Select plants with desired characteristics
2) remove explants (cells from tips of shoots or roots) and sterilise them
3)place in a Petri dish with a nutrient medium (contains nutrients and growth hormones)
4) remove more explants from these when they grow
5)kept in optimal conditions

Question 4

FSH

Answer 4

1)produced in the pituitary gland
2)causes an egg to mature in one of the ovaries in a structure called a follicle
3)stimulates the ovaries to produce oestrogen
4)oestrogen the inhibits the release of FSH

Question 5

Oestrogen

Answer 5

1)produced in the ovaries
2)causes the lining of the uterus to grow
3)stimulates the release of LH (which causes the release of an egg

Question 6

LH

Answer 6

1)Produced by the pituitary gland
2)stimulates the release of an egg at day 14 (ovulation)

Question 7

Progesterone

Answer 7

1)produced in the ovaries by the remains of the follicle after ovulation
2)maintains the lining of the uterus during the second half of the cycle. When the level of progesterone falls the lining breaks down.
3)inhibits the release of LH and FSH