Genetics

Question 1

Structure of male reproductive system

Answer 1

Glands, sperm ducts, testis, scrotum, urethra, penis

Question 2

Penis function

Answer 2

Deposits sperm into the female’s vagina during copulation

Question 3

Sperm Duct function

Answer 3

Carries Sperm from the testis to the urathra

Question 4

Testis Function

Answer 4

Site of sperm production

Question 5

Urethra Function

Answer 5

The tube which transports sperm out through penis

Question 6

Structure of female reproductive system

Answer 6

Ovary, Oviduct, Uterus, Uterine lining, vagina, cervix

Question 7

Ovary

Answer 7

Site of egg production

Question 8

Oviduct

Answer 8

Site of fertilisation

Question 9

Uterus

Answer 9

Where the embryo grows and develops into a fetus

Question 10

Uterus lining

Answer 10

Where fertilised egg implants

Question 11

Vagina

Answer 11

Where sperm is deposited by the penis during copulation

Question 12

Basic Structure Of Sperm

Answer 12

-Small cell
-Tail for swimming
-Contains many mitochondria to provide (ATP)
-Has nucleus

Question 13

Basic Structure of egg cell

Answer 13

Large cell
Contains nucleus
Contains yolk for food source

Question 14

What happens to zygote after fertilisation

Answer 14

-After fertilization, the zygote moves down the oviduct
-It implants itself in the spongy wall of the uterus where it forms an embryo
-At this point the placenta begins to develop

Question 15

Materials that pass from the mothers blood to the blood of the embryo

Answer 15

Variety of nutrients and oxygen

Question 16

Two materials that pass from the embryos blood to the blood of the mother

Answer 16

Variety of waste products and CO2

Question 17

Variation

Answer 17

Is the differences which can occur between individuals of the same species

Question 18

What is variation influenced by

Answer 18

-Genetic Make-up
-Environmental mental factors

Question 19

Continuous variation

Answer 19

-Can be measured and there is a wide range of values between two extremes. ( between a maximum and a maximum)
-Controlled by many genes, also known as polygenic inheritance
LINE GRAPH

Question 20

Discrete Variation

Answer 20

It’s clear-cut and is easily observed. These characteristics can be put into district categories.
Only controlled by a single gene(single gene inheritance)
BAR GRAPH

Question 21

Example of continuous variation

Answer 21

Weight, height, shoe size, handspan, nose

Question 22

Example of discrete variation

Answer 22

Eye colour, hair colour, blood type

Question 23

Continuous Variation inheritance

Answer 23

Most human characteristics fall under continuous variation and are controlled by polygenic inheritance.

Question 24

Phenotype

Answer 24

Outward appearance, physical appearance. Written in words

Question 25

Genotype

Answer 25

The actual genes possessed, written as letters

Question 26

Heterozygous

Answer 26

Two different size of letters

Question 27

Homozygous

Answer 27

Two same size of letters

Question 28

Allele

Answer 28

Different forms of the same gene

Question 29

fertilisation

Answer 29

Random process with an element of chance