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Page 1: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

First semester

Grade 10 Advanced

Unit 7

Inheritance and variation

Name :------------------------------------------ Class-------------------:

Page 2: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Booklet keyBooklet key

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Key words

links

Exercises

Reading text for improving

language only

Page 3: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

TopicNo. Pg

Unit 7 : Inheritance and variation

Chromosome structure الكروموسوم رت كيب

3

Chromosomes and Chromatins الكروموسوم والكرومتيد

4

Types of variation التباين 5انواع

CONTINUOUS Variation المستمر 6التباين

DISCONTINUOUS Variation المتقطع 7التباين

Exercises تمرينات

8

Contents

Grade10A Unit 7 : Inheritance and variation

Page 4: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Unit 7

Standards:

1

Inheritance and variation

10A.12.1 Describe a chromosome and know that chromosomes carry DNA and that all somatic cells are diploid (2n), and have a double set of chromosomes, while gametes

are haploid (n), having a half set of chromosomes.

الكروموسوم ي الكرومو ويعرفصف النووي سأن الحمض تحمل ومات DNA ثنائية مجموعات تحوي الجسمية الخاليا جميع من ) 2n(وأن

فردية مجموعات تحوي األمشاج وأن من ) n(الكرموسوماتالكروموسومات

10A.13.1

Identify environmental and genetic causes of variation and distinguish between continuous and discontinuous variation within a population.

التباين يحدد من والوراثية البيئية االختالف ، األسباب بين والتمييزالسكان بين والمتقطع .المستمر

Grade10A Unit 7 : Inheritance and variation

Page 5: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Key WordsKey WordsScientific term معنى

المصطلح Scientific term معنى

المصطلح

chromosome,sperm,

chromatin,egg

centromerescontinuous variation

somatic cell,discontinuous variation

gamete (sex cell)environmental factors

diploid (2n) ,genetic factors

haploid (n)sexual reproduction

2

Grade10A Unit 7 : Inheritance and variation

Page 6: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

DNA - is a nucleic acid that contains the genetic instructions specifying the biological development of all cellular forms of life

بها تقوم التي الحيوية األنشطة CدDحدC ت التى Eالوراثية Eاألوامر على Eحتوي ي الذي النووي الحامض هو. الحية الخاليا جميع

Diploid organism: two sets of chromosomes ( one from each parent) (2n) like : all human cells

Haploid organism: one set of chromosomes (n), like : sperm or egg.

Chromosome structure

Nucleuse

عن : عبارة للكروموسومات الكامل الكروموسومات مجموعتينالعدد منأب ) واحدة ( كل ك 2nمن جميع ، في الجسمية ما الخاليا

المختزل ( ) النصفي العددعبارة : للكروموسومات

واحدة من مجموعةك في الكروموسومات ما

والبويضة . المنوي الحيوان

3

Chromosome

Diploid Haploid

Grade10A Unit 7 : Inheritance and variation

Page 7: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Chromosomes and Chromatins

Children born from the same parents all look slightly different , we call these differences

variation. ”

الوالدين ل االطفا نفس من يولدون الذينيسمى ما وهذا االختالفات بعض بينهم تكون

بالتباينVariation is the range of differences that there are between individual organisms. Variation can be within species Think of all the differences between individual humans) الواحد النوع افراد فى التباين . يحدث

These are different varieties of the same species

There are variations in skin colour, hair colour, hair curliness, eye colour and sex فى تباين العيون هناك ولون الشعر، تجاعيد فى البشره، ، لون. والجنسVariations may be inherited or acquired

الحيه الكئنات بين االختالفات مجموعه هو التباين

الواحد للنوع اصناف توجد

يكتسب وقد يورث قد التباين

4

Chromatins

variationacquired

inherited

Grade10A Unit 7 : Inheritance and variation

Page 8: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Types of variationوراثى Genetic variation- 1تباين

differences that are due to the DNA inside the cells of the

organism rather than the effect that its surroundings have on it.

2- Environmental variation البيئه تسببه تباين Differences that are due to the external environment. For example المحيطه

availability of water, nutrients, light, prevailing winds.

Here are some examples:

بس للخليه بتباين النووى الحمض فى يوجد الذى الجينى التركيب ب

خارجيه بيئيه عوامل تسببها اختالفات

Genetic variationوراثيتباين

Environmental variation

بيئي تباين

Genetic andEnvironmental

وبيئي وراثي تباين

Earlobes hapeاالذن حلمه شكل

Intelligenceالذكاء Scarندبه

Eye color العين كتله Body massالنطق Spokenلونالجسم

Nose shape شكلاالنف

Height الطول

5

Genetic

Environmental

Grade10A Unit 7 : Inheritance and variation

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Variation

Have any value between two extremes. قيمتين بين قيمه لهطرفيتين

E.g. Height of human االنسان فى الطول مثال

Body mass of cats الجسم القطط كتله في

Trumpet length of daffodils النرجس بوق طول

Leaf width of shrub الشجرة عرض ورقه

Length of bacteria البكتريا طول

Variation can be CONTINUOUS, المستمر التباين

6

CONTINUOUS

DISCONTINUOUS

Grade10A Unit 7 : Inheritance and variation

Page 10: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

in this case there only a few possible categories that the characteristic can fall into.

E.g:

الواحد النوع فى االزهار Flower color in a single species لوناالنسان عند الدم Human blood group فصائل

االذن حلمه ear lobe type شكل Bacteria that are or are

not resistant to an antibiotic

Variation can be DISCONTINUOUS, المتقطع التباين

المقاومه وغير المقاومه البكتريا

7http://www.tutorvista.com/content/biology/biology-iii/heredity-and-variation/heredity-variation-animation.php

Grade10A Unit 7 : Inheritance and variation

Page 11: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Question 1:

Exercises

Label the diagram below. البيانات اكتب

8

Grade10A Unit 7 : Inheritance and variation

Page 12: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Fill in the blank

(Centromeres - Nucleus - Zygote – Chromatid)

Genetic material is found in the-----------------------

فى توجد الوراثيه ---------------------الماده

Each individual strand of a chromosome is called a (n)----------------

يسمى للكروموسوم الفردى .....................الخيط

The structure which holds two chromatids together is called the --------

الكروماتدي يربط الذى يسمى دينالتركيب بعضهما مع .........................

Question 2:

بكلمات التالية الفراغات املئاألعلى من مناسبة

9

Grade10A Unit 7 : Inheritance and variation

Page 13: First semester Grade 10 Advanced Unit 7 Inheritance and variation Name :------------------------------------------ Class :-------------------

Question 3:10 minutes

(max)Read the text below then answer the following questions.

األسئلة : على أجب ثم التالي النص أقرأ الثالث السؤال: التالية

3 -Write a summary for the above text.بأسلوبك - 3 السابق النص لخص

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

READING ACTIVITY

10

DNA is only as powerful as the proteins it produces. Proteins are products of gene expression that create our phenotype. Some genes work alone producing a protein that results in a phenotype for a single gene trait. Other genes work together along with the environment to create a phenotype for multifactorial conditions

Grade10A Unit 7 : Inheritance and variation

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11

Grade10A Unit 7 : Inheritance and variation