Genetics 1 Answers

EVEN

2) true-breeding.

4) dominance.

6) They can be identical or different for any given gene in a somatic cell. They can be dominant or recessive. They can represent alternative forms of a gene.

8) that the parents were both heterozygous.

10) 50%

12) predicting the result of genetic crosses between organisms of known genotypes

14) 1/64

16) 100%

18) I-2, II-3, III-1

20) b

22) c

24) environmental factors such as soil pH.

26) 1/4

28) are heterozygous for the sickle-cell allele. are usually healthy. have increased resistance to malaria. produce normal and abnormal hemoglobin.

30) epistasis

32) b .

34) c

36) amniocentesis chorionic villus sampling

38. the random arrangement of chromosomal tetrads at metaphase I

40. AA

42. 100%

44. Traits are inherited in discrete units, one from each parent.

46. 3/4

48. 190

50. intermediate inheritance

52. It cannot be done.

54. mitochondrial DNA and X chromosome