حل أوراق عمل Inheritance في العلوم المتكاملة للصف السادس - الفصل الثالث (2)

LESSON 1: Inheritance

1. Multiple-choice The passing of traits from parents to offspring is called .......

A. heredity B. genetics C. alleles D. Fertilization

2. Multiple-choice how a trait appears or is expressed is called ........

A. heredity B. phenotype C. gene D. Fertilization

3. Multiple-choice The different forms of a gene (example purple flowers or white flowers) are called the ...

A. heredity B. genetics C. gene D. alleles

4. Multiple-choice the study of how traits are passed from parents to offspring is called ......

5. Multiple-choice A section of a chromosome that carry the genetic information for a trait.

A. genetics B. trait C. gene D. alleles

6. Multiple-choice a genetic factor that blocks another genetic factor.

A. dominant trait B. recessive trait

7. Multiple-choice This trait is hidden or blocked whenever the dominant allele is present Recessive trait Dominant Alleles

8. Multiple-choice A chart that shows all the possible combinations of alleles that can result from a genetic cross

A. Punnett Square B. Pedigree C. Genotype chart D. Cross chart

9. Multiple-choice An organism's physical appearance or visible traits - this is how a trait appears or is expressed

A. punnett square B. genotype C. phenotype D. homozygous

10. Multiple-choice An organism's genetic makeup, or allele combination. In other words this is the two alleles that control an organisms phenotype.

11. Multiple-choice An organism that has two different alleles for a trait (hybrid)

A. dominant trait B. genotype C. homozygous D. heterozygous 12. Multiple-choice An organism that has two identical alleles for a trait (true-breeding)

A. genotype B. phenotype C. homozygous D. heterozygous 13. Multiple-choice Heredity is the passing of traits from _____________ to __________ A. predators to prey B. water to rain C. parents to offspring D. fungi to protists 14. Multiple-choice What is true-breeding? A. A plant whose offspring share the same traits as the parent B. A plant whose offspring is genetically different from the parent.

15. Multiple-choice In a Punnett Square, a capital letter stands for a _____________ allele.

A. recessive B. dominant C. homozygous D. heterozygous

16. Multiple-choice A Punnett Square shows you all the ways in which ___________ can combine.

A. alleles B. eggs C. sperm D. colors

17. Multiple-choice A recessive trait is observed when _________ recessive genetic factors are present in offspring.

A. 1 B. 2 C. 3 D. 4

18. Multiple-choice Of the following, which represents a homozygous recessive genotype?

A. TT B. Tt C. tT D. tt

19. Multiple-choice A true breeding purple (dominant) plant and a true breeding white plant (recessive) cross-pollinate. The offspring will be __________.

A. All purple B. half purple, half white C. 75% purple, 25% white D. 75% white, 25% purple

20. Multiple-choice Parents pass their traits down to their offspring through their ______________.

A. daughter cells B. son cells C. body cells D. reproductive cells

21. Multiple-choice Genes come from _____. A) parents B) nature C) our environment D) the store 22. Multiple-choice A and B are the same kind of fish. A has a genotype for narrow fins (ww), and B has a genotype for wide fins (W-). Which of the following genotypes of parent fish will produce only offspring with wide fins?

A. Ww and Ww B. WW and ww C. Ww and ww D. ww and ww 23. Multiple-choice What best explains why Mendel choose to study pea plants in order to learn how traits are passed from parent to offspring?

A. Pea plants grow quickly B. Pea plants are ultraviolet C. Pea plants are rare and expensive D. Pea plants are take years to grow

24. Multiple-choice Kari has two pet rats with black fur. When her rats mated, one of their four offspring had white fur, and the other three had black fur. Which is most likely true for Kari’s rats? A) Both parents are homozygous for the white-fur trait, which is recessive. B) Both parents are heterozygous for the white-fur trait, which is dominant. C) Both parents are heterozygous for the white-fur trait, which is recessive. D) Both parents are heterozygous for the white-fur trait, which is sex-linked.

25. Multiple-choice

True or False: Recessive traits are ALWAYS present A. True B. False

26. Multiple-choice What is a pedigree?

A. One chromosome that codes for a trait B. A type of allele C. a model that shows genetic traits that were inherited by members of a family D. A section on a chromosome or a a piece of a DNA that codes for a trait

27. Multiple-choice

Chromosomes contain genetic material (DNA), sections of DNA are called ...... A. Genes B. Alleles C. Genotypes D. Phenotype

28. Multiple-choice

the genotype in the red box will be A. homozygous dominant B. heterozygous recessive C. homozygous recessive D. heterozygous dominant

29. Multiple-choice

30. Multiple-choice Both parents in this Punnet square

A. are homozygous dominant B. are homozygous recessive C. are heterozygous

31. Multiple-choice

How many boxes would say BB? A. 1: 75% B. 2: 50% C. 4: 100% D. NONE

32. Multiple-choice

What is the genotypic ratio here

A. TT = 25% Tt= 50% B. TT = 50% Tt= 25% C. TT= 75% tt = 25% D. Tt = 100%

tt=25% tt=25%، 33. Multiple-choice

A Punnet Square will

A. tell you exactly what your offspring will look like B. increase the chance you pass on recessive traits C. predict genotypes and phenotypes in offspring D. have no purpose but for Taylor to give us extra assignments