Genetics exam 1 stuvia - Study guides, Class notes & Summaries

weight, smoking, sex practices, diet - ANSWER-List four modifiable risk factors. (general health promotion) age, genetics, sex - ANSWER-List three non-modifiable risk factors. (general health promotion) cultural assessment - ANSWER-What type of assessment should the nurse preform prior to initiating health teaching? physiological integrity safety and security belongingness and affection esteem and self-respect self-actualization -- physiologic needs and life threatening issues are...

How many amino acids (out of 715) have changed in FOXP2 since humans split from mice? a. two b. 136 c. three d. seven - ANSWER- c. three The frequency of what types of mutations are used as a molecular clock? a. synonymous b. microdeletions c. nonsynonymous d. asynchronous - ANSWER- a. synonymous ECP and EDN are two Ribonuclease enzymes that arose from a duplication 31 million years ago of the original gene. Which of the pathways shown in the phylogenetic tree below has undergo...

Trait -ANSWER_ Any characteristic that an organism displays Genomic imprinting -ANSWER_ A segment of DNA is marked and the effect is maintained throughout the life of the organism inheriting the marked DNA Maternal Effect -ANSWER_ The genotype of the mother directly determines the phenotype of her offspring. Test cross -ANSWER_ Mating between an individual that is heterozygous for two or more genes and one that is homozygous recessive for the same genes Crossing over -ANSWER_ Non sis...

Gregor Mendel (1865-1866) - ANSWER- Using pea plants he observed what he called the Laws of Heredity: 1. Law of Segregation - there is one gene per sex cell, so we have to genes, one from each parent. 2. Law of Independent Assortment - traits are inherited independently, found to be untrue for all (linkage). 3. Law of Dominance - there are recessive and dominant traits, not all of them. Thomas Morgan (1910) - ANSWER- Chromosome Theory of Inheritance: 1. Sex chromosomes 2. Chromosome pair...

What is genetics? - ANSWER-study of genes and what they do; branch of biology that deals with heredity and variation root of the natural diversity that we observe among members of the same species as well as among different species - ANSWER-Genetic variation Gene - ANSWER-"Unit of heredity", usually described according to the way it affects the traits or characteristics of an organism How many genes are there? - ANSWER-Around 30,000-35,000 How much of the genome is coded for? - ANS...

mendel's contributions - ANSWER- 1. traits inherited in predictable way 2. traits controlled by pair of genes 3. pair segregates during gamete formation diploid - ANSWER- a condition in which each chromosome exists in pairs; having two of each chromosome (2n) diploid number - ANSWER- members of each species have a characteristic number of chromosomes haploid - ANSWER- cell or an organism having one member of each pair of homologous chromosomes. aka gamete chromosome number (n) su...

What characteristic is not necessary for a molecule that is the genetic material? A. It must contain complex information B. It must be variable C. It must perform the action associated with the phenotype D. It must have the ability to replicate faithfully E. It must encode the phenotype - ANSWER- C A key discovery leading to the structure of DNA was done by Chargaff. He found that ____________ (2) A. The amount of A equals the amount of T, and the amount of G equals the amount of C B. ...

What characteristic is not necessary for a molecule that is the genetic material? A. It must contain complex information B. It must be variable C. It must perform the action associated with the phenotype D. It must have the ability to replicate faithfully E. It must encode the phenotype - ANSWER- C A key discovery leading to the structure of DNA was done by Chargaff. He found that ____________ (2) A. The amount of A equals the amount of T, and the amount of G equals the amount of C B. ...

Which of the following is NOT a correct statement about the process of meiosis? A) Four haploid cells are produced from one diploid cell. B) The DNA is replicated twice, and there are two rounds of division. C) Synapsis and crossing-over occur during prophase I. D) Meiosis I separates homologous chromosomes; meiosis II separates sister chromatids. - ANSWER- B The pairing of homologous chromosomes during meiosis is known as __________. A) nondisjunction B) synapsis C) linkage D) segre...

Mastering Genetics 3,4,9,10,11 What is the basis for homology among chromosomes? - ANSWER- type and location of genes Polydactyly is expressed when an individual has extra fingers and/or toes. Assume that a man with six fingers on each hand and six toes on each foot marries a woman with a normal number of digits. Having extra digits is caused by a dominant allele. The couple has a son with normal hands and feet, but the couple's second child has extra digits. What is the probability that ...