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2 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt The History of Genetics Terms D v R, Incomplete, or Codominance Mutations Gender Determination

3 This scientist is called the “Father of Genetics.”

4 Who is Gregor Mendel?

5 Using pea plants, Mendel studied this.

6 What is heredity?

7 Mendel observed the physical characteristics of pea plants. A better, more scientific way of saying physical characteristics is this.

8 What is phenotype?

9 Mendel found that when he crossed purebred tall plants with purebred short plants, he would only get this type of plant.

10 What are tall plants?

11 Mendel used this reproductive technique in order to control the traits of his pea plants.

12 What is cross pollination?

13 This is the scientific study of heredity.

14 What is genetics?

15 This is a segment of DNA on a chromosome that codes for a certain trait.

16 What is a gene?

17 These are different forms of a gene.

18 What are alleles?

19 Having two identical alleles for a trait (AKA “pureline” or “purebred”).

20 What is homozygous?

21 Having two different alleles for a trait (AKA “hybrid”).

22 What is heterozygous?

23 Height in pea plants.

24 What is Dominant vs. Recessive?

25 Pink 4-o’clock flowers.

26 What is incomplete dominance?

27 Roan cattle.

28 What is incomplete dominance?

29 A black and white chicken.

30 What is codominance?

31 In humans, eye, hair, and skin color are all examples of this.

32 What is incomplete dominance?

33 This is the definition of mutation.

34 What is a change in a gene or chromosome?

35 This is a picture of all the chromosomes in a body cell arranged in pairs.

36 What is a karyotype?

37 This disorder is caused by an extra copy of the #21 chromosome.

38 What is Down Syndrome?

39 When talking about base pairs, A (adenine) will only pair with this and C (cytosine) will only pair with this.

40 What is T (thymine) and G (guanine), respectively?

41 This is a form of chromosome mutation in which chromosomes don’t divide properly during meiosis.

42 What is nondisjunction?

43 This is another way of saying “sex cell.”

44 What is gamete?

45 This a form of cell division that is particular to gametes.

46 What is meiosis?

47 The probability of having a male versus a female offspring is this.

48 What is 50-50?

49 If an X sperm fertilizes an egg, the zygote will be this.

50 What is female?

51 If a Y sperm fertilizes an egg, the zygote will be this.

52 What is male?