Zea mays:
2n = 20
n = 10
64. Trisomy = One extra copy of a chromosome = 2n + 1 = 21
65. Monosomy = Absence of a chromosome = 2n - 1 = 19
66. Triploid = 3n = 30
67. Tetrasomy = 2n + 2 = 22
68. Allotriploid = n from one species and 2n from another species = 6 + 14 or 12 + 7 = 19 or 20
69. Messelson and Stahl conducted experiments with radioisotopes to confirm the semiconservative nature of DNA replication.
70. Griffith performed transformation experiments on Streptococcus.
71. Watson and Crick used the data from Franklin, Chargaff, and Pauling.
72. The virus contains Uracil and does not follow Chargaff's rule. So, it must be a ssRNA virus.
73. Lysine and ARginine are found at the Histone tails.
mays is a diploid species with 10 pairs of chromosomes in each somatic cell. How many...
1. Read through the INTRODUCTION. Answer the questions in between each historical section. PRE-LAB: LAB EXERCISE 7 Directions: Use the lab manual to answer the following questions in COMPLETE SENTENCES AND IN YOUR OWN WORDS. Use your own handwriting, do NOT type! 1. Read through the INTRODUCTION. Answer the questions in between each historical section: . . . . m . N m - N The Evidence : 1869-1924 1869: DNA, first called nuclein, is identified in cell nuclei of...
Use the table to answer the question. In 1928, Frederick Griffith injected four groups of mice with different strains of the bacteria, Streptococcus pneumoniae. The smooth strain had a polysaccharide capsule that protected the bacteria from the mouse's immune system. The rough strain did not have this capsule. The details of each group and the results of the experiment are shown in the table below. Bacteria After injection with bacteria Group 1 smooth strain mice died Group 2 rough strain...
Alligators have 32 chromosomes in somatic cells. (a) How many homologous pairs of chromosomes OD (b) How many chromosomes are there in a haploid set? (c) How many chromosomes are present in a somatic cell just after mitosis? (d) How many double-stranded DNA molecules are there in a somatic cell just before mitosis?
regarding genetics. can someone help and explain WHY the answer is chosen for the question 18. What is the purpose of using a blender in the Hershey & Chase experiment to identify the identity of genetic material? A) Break the conjugation bridge B) Lyse the infected cells C) Displace the bacteriophage material that has not been injected into the bacterial cell D) Resuspend all the cells and particles that have fallen to the bottom of the culture E) Displace dsDNA...
Name: Date: Section: Biology 190: Introduction to Cdl and Molecular Biolog Reading guide # 16 Ch.-DNA Structure & Replication Read p. 257-273 from Cha dar the following question Prior to Watson and Crick's deduction of DNA structure, the parad that protein and not DNA was the molecule that was the likely genetic mate candidate at the time? on of DNA structure, the paradigm among the scientific community was Necule that was the likely genetic material. Why was protein a stronger...
13. What are TWO of the insights Watson and Crick had with respect to the structure of DNA? a. DNA is a double-stranded helix held together by A:T or C:G base pairs b. DNA is a helix and has A:T or C:G base pairs c. DNA is a double-stranded helix and the amount of A=T and of G=C d. DNA has two strands in opposite orientation and the amount of A=T and of G=C 14. Griffith's experiment injecting a mixture...
3. (4 pts). A diploid somatic cell of a hypothetical eukaryote contains two pairs of homologs in its nucleus (2N = 4). One pair of homologs is metacentric and the other pair is submetacentric. The metacentric pair is heterozygous at two gene loci and each locus is on a different arm. At one locus, the alleles are identified by the letters “A” and “a”. At the other locus, the alleles are identified by the letters “B” and “b”. The upper...
las n o relationship with the tertiary structure. nuclease proves that the primary structure of a globular the he d) The planes of base pairs using ribo e) Th rs are parallel to the helix axis in the Watson-Crick DNA double helix. e sequence on one strand of n Crick DNA doubld e the helix varies independenty of that in the other strand in the varies in 10. The person n that discovered that A:T and G:C ratios in DNA...
QUESTION 2 Which type of chromosome abnormality would be most likely to result in the least severe phenotype? a. A duplication of 1/4 of a chromosome b. A monosomy G. A trisomy d. A deletion of 1/4 of a chromosome e. A balanced Translocation QUESTION 3 A woman with albinism (an X-linked recessive gene) has a child with a man who has normal pigment. Their child is heterozygous for albinism with Klinefelter's syndrome (XXY). Where did the non-disjunction event occur?...
8. How many haploid sets of chromosomes are present in an individual cell that is pentaploid 5n A) 2 B) 3 C) 4 D) 5 E) It is impossible to tell with the information given. 9. The process that leads to development haploid gamete is best described as ________. A) segregation B) independent assortment C) Mendelian inheritance D) replication E) dominance or recessiveness 10. If an F2 generation from a self-cross always yields offspring in a 3:1 phenotypic ratio, which...