07_jpnt_scn_f4_modul2

Modul 2 : Bimbingan EMaS Chapter 3 : Heredity and Variation

Catatan : [R] Aras[S] Aras[T] Aras

SCIENCEFORM 4

MODUL KECEMERLANGAN AKADEMIKTERENGGANU TERBILANG 2007

PROGRAM PRAPEPERIKSAAN SPM

Rendah 1 Science Form 4SederhanaTinggi

MODULE 2


Catatan : [R] Aras Rendah 2 Science Form 4[S] Aras Sederhana[T] Aras Tinggi

HEREDITY AND VARIATION

1 The process to produce gametes isA MitosisB MeiosisC MutationD Fertilization

2 The chromosomes present in the male skin cells areA 22 + XB 22 + YC 44 + XXD 44 + XY

3 In a cross-breed of red (M) and white (m) peanuts, it is found that 50% of the seedlingsproduced in the first generation are red. It is also known that gene M is dominant. What isthe genetic pairing carried by the red and white parent trees?

Red parent White parentA MM MmB Mm mmC Mm MmD MM mm

4 Which of the following is the correct sequence of the mitosis stages?

A

B

C

D

5 Which of the following statements is correct about mitosis?A Involved in growthB Involves all type of cellsC Halves the number of chromosomesD Genetic contents of daughter cells and parent cells are different

R

R

T

S

S


Catatan : [R] A[S] A[T] A

6 The diagram shows the different phases in cell division in meiosis.

Which is theA P,Q,R,SB Q,R,P,SC R,P,S,QD S,P,R,Q

7 Diagram 1 s

What is thethe filial genA 1 : 0B 1 : 1C 1 : 3D 3 : 1

A

AA

Parents

Gametes

Filialgeneration

Ke

A – Tall da – Dwarf

T

S

P Q

ras Rendah 3ras Sederhanaras Tinggi

correct sequence in meiosis?

hows the inheritance of height in

ratio of the number of tall young peration?

Aa

Tall X

Aa

Aa

y

ominan generecessive gene

DIAGRAM

R

Science Form 4

a type of plant.

lants to the number of dwarf young plants in

Aa

Tall

a

Aa aa

Meiosis

Fertilization

1

S



8 The diagram shows a first generation of cross breeding of two mice.

H - Represents the dominant genes for black fur.H - Represents recessive genes for white fur.

What are the genes for the parents?Male Female

A HH HhB HH hhC Hh hhD hh Hh

9 Ghulam Ahmad and Ghulam Ahmed are identical twins. Ghulam Ahmad is brought up inMalaysia by his parents. Ghulam Ahmed is brought up in Pakistan by his grand parents.They may be different inA WeightB Blood groupC Type of earlobeD The ability to roll the tongue

10 A spontaneous change in a chromosome or gene which results in the change of genotypeand phenotype of a cell or an organism is calledMitosisB meiosisC mutationD monohybrid

Male Female

XParents

First generation

T

S

R



11 The picture shows children with Down’s syndrome.

What caused Down’s syndrome?A Gene mutationB Chromosome which is not sufficientC Recessive gene in sex chromosomeD Presence of 47 chromosomes in the body

12 The following are the characteristics of a patient of disease Y.

What is disease Y?A AlbinismB Colour blindnessC Turner’s syndromeD Klinefelter’s syndrome

13 Which of the following is caused by gene mutation?A Colour blindnessB Down’s syndromeC Turner’s syndromeD Klinefelter’s syndrome

14 Which of the following is an example of a continuous variation?A Blood groupB Body HeightC Type of ear lobeD Ability to roll the tongue

15 Which of the following is an example of a discontinuous variation?A HeightB Skin colourC Blood groupD Body weight

Female Sex chromosome is XO Lack of secondary sexual

characteristics

R

S

R

R

R



16 The graph shows an example of variation among the pupil in a class.

Another example of the same type of variation isA Type of hairB Blood groupC Body weightD Type of earlobe

17 The differences between individuals in a family is referred toA HybridsB VariationC GeneticsD Segregation

18 If a colour blind woman marries a man who is normal,A All their children will be normalB All their sons will be colour blindC Their son will be a colour blind carrierD All their daughters will be colour blind

19 The diagram 3 shows a fertilization process and produce a female baby.

DIAGRAM 3Choose the correct match between genetic of sperm and ovum.

Sperm OvumA 44 + XX 44 + XYB 44 + X 44 + XC 22 + Y 22 + XD 22 + X 22 + X

Sperm

Ovum

S

R

T

R



20 Two tall pea plants(TT x Tt) are cross-bred. What is the probability of a tall plant beingproduced?

A 41 C 4

3

B 21 D 1

Structure

1. The height of students in a class is measured. The data obtained is shown below.

TABLE 1

(a) Based on the data given in Table 1, complete Table 2.

Height of students / cm 146 – 150 151 – 155 156 – 160 161 – 165 166 - 170

Number of students

TABLE 2[2 marks]

(b) Based on the table 2, draw a histogram of number of students against height.

Height of students / cm154 160 156 147 153 168 152160 159 166 155 157 163 158167 165 156 158 162 159 154159 168 163 156 152 157 157

15

10

5

146 - 150 151 - 155 156 - 160 161 - 165 166 - 170 Height/cm

Number of students

T

S

S



[2 marks](c) Based on the graph in 1(b), state the type of variation shown by the height.

……………………………………………………………………………………………………………[1 mark]

2 Diagram 1 shows four stages of cell division.

DIAGRAM 1

(a) Name the type of cell division in the Diagram1.

……………………………………………………………………………………………………………[1 mark]

(b) In female, where this cell division occurs?

……………………………………………………………………………………………………………[1 mark]

(c) If cell A have 4 chromosomes, how many chromosomes do the daughter cell have?

……………………………………………………………………………………………………………[1 mark]

(d) State two of the importance of this cell division.

……………………………………………………………………………………………………………

……………………………………………………………………………………………………………[2 marks]

S

S

S

S

S



3 Diagram 2 shows the inheritance of hair type.

(a) Complete the above Diagram2.[2 marks]

(b) What is the process Q?

……………………………………………………………………………………………………………[1 mark]

(c) What is the ratio of the daughter with curly hair to the straight hair?

……………………………………………………………………………………………………………[1 mark]

(d) What is the meaning of the dominant gene?

……………………………………………………………………………………………………………[1 mark]

Hh hh

Father (Curly hair) Mother (Straight hair)X

hh

hh hh

Parents

Gametes

Filialgeneration

Meiosis

Process Q

Key

H– Dominant genes curly hair

h– Recessive genes straight hair

DIAGRAM 2

S

S

S

S



4. Diagram 3 shows the type of ear lobes that can be inherited by a child from his or her parents.

DIAGRAM 3

(a) Name the type of variation shown in Diagram 3.

……………………………………………………………………………………………………………[1 mark]

(b) Give another example of the same type of variation mentioned in (a).

……………………………………………………………………………………………………………[1 mark]

(c) What factor influences the above variation?

……………………………………………………………………………………………………………[1 mark]

(d) Write down each child’s pair of genes in the boxes provided in Figure 3.[2 marks]

(e) Based on Diagram 3, Which type of ear lobe is dominant?

……………………………………………………………………………………………………………[1 mark]

Father(Free ear lobes )

Mother(Attached ear lobes )

ttTT

X

Child

S

S

S

S

S



5 There are two types of twins. Diagram 4 shows the formation of twins.

DIAGRAM 4

(a) (i) State the type of twins produced in Diagram 4.

………………………………………………………………………………………………………

(ii) Explain your answer in (a) (i).

………………………………………………………………………………………………………

………………………………………………………………………………………………………[2 marks]

(b) If the sex genes of both sperms are XY, what are the sexes of the twins?

……………………………………………………………………………………………………………[1 mark]

(c) State one of the physical characteristic of the twins in (a).

……………………………………………………………………………………………………………[1 mark]

(d) State another type twins.

……………………………………………………………………………………………………………[1 mark]

S

S

S

S



6 Diagram 5 shows a process which took place during meiosis.

DIAGRAM 5

(a) Name the process which took place.

……………………………………………………………………………………………………………[1 mark]

(b) What is produced by this process?

……………………………………………………………………………………………………………[1 mark]

(c) State where this process happen?

……………………………………………………………………………………………………………[1 mark]

(d) State one of the advantages of this process.

……………………………………………………………………………………………………………[1 mark]

S

S

S

S



Section C

1 Study the following statement;

(a) Suggest a hypothesis to investigate the above statement. [1 mark] / T

(b) Using the leaves that found around your school compound, describe an experiment to testyour hypothesis in (a) based on the following criteria;

Aim of the experiment [1 mark] / R Identification of variables [2 marks] / S List of apparatus [1 mark] / S Procedure [3 mark] / S Tabulation of data [1 mark] / R Conclusion [1 mark] / S

2 There are two types of variation, continuous variation and discontinuous variation.(a) Give four differences between continuous variation and discontinuous variation.

[4 marks] / S

(b) Figure 6 shows various characteristic of human being.

FIGURE 6

Study the information in figure 6 and construct the concept of continuous variation.Your answer should be based on the following steps;

Identify the information [1 mark] / R Identify the common characteristics [2 marks] / S Relate the common characteristics to the continuous variation in order to construct the

initial concept [1 mark] / S Give an example of another continuous variation and discontinuous variation

[2 marks] / R State the actual concept of continuous variation [1 mark] / S

Variation

HeightWeight

Skin colour

The size of leaf is a continuous variation


Catatan : [R] Ar[S] Ara[T] Ara

3. (a) State the importance of selective breeding.[4 marks] / S

(b) Diagram 7 shows two type of padi produced by area A and area B.

Study the abetter qualiYour answe

Identify

List thre

Choose

Padi A Big in size Less resistant to

as Rendah 14s Sederhanas Tinggi

DIAGRAM 7

bove information and explain how youty.r should include the following;

the problem

e solving methods

the best method and explain your ch

diseases

Padi B Ripen faster More resistant to

Science Form 4

can help the farmer to produce padi with

[1 mark] / S

[3 marks] / S

oice [2 marks] / S

diseases

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07_jpnt_scn_f4_modul2