Examples of quantitative traits include height, skin colour, weight and blood pressure. There is no single gene for any of these traits, instead it is generally believed that continuous variation in a trait such as blood pressure is partly due to DNA sequence variations at multiple genes.
Q. What are two types of quantitative variables?
There are two types of quantitative variables: discrete and continuous. What does the data represent? Counts of individual items or values. Measurements of continuous or non-finite values.
Q. Which is an example of a quantitative trait?
Examples of quantitative traits are height, weight, skin color, and predisposition to heart diseases. Quantitative traits differ from monogenic trait by involving many genes acting together to produce a trait that does not follow a Mendelian inheritance pattern.
Q. What is the difference between quantitative and qualitative traits?
Qualitative traits are frequently controlled by one or just a few genes meaning they are simply-inherited traits. Conversely, quantitive traits are traits with phenotypes that can be measured numerically. Usually, quantitative traits are polygenic meaning they are controlled by many genes and gene interactions.
Q. Which trait is a quantitative trait in humans quizlet?
Quantitative traits are described numerically. Examples include height, weight, speed, and metabolic rate. In a population, a trait may be given a mean value, and the degree of variation may be described by the variance and standard deviation.
Q. Which of the following is an example of a Meristic trait?
Meristic traits are those in which the phenotypes are recorded by counting whole numbers. Examples of meristic traits include the num- ber of seeds in a pod or the number of eggs laid by a chicken in a year. These are quantitative traits, but they do not have an infinite range of phenotypes.
Q. What is a typical characteristic of a quantitative trait?
Quantitative traits are phenotypic traits that are determined, jointly with the environment, by many genes of small effect. Most of the directly observable individual characteristics are quantitative traits. Differences in quantitative traits can give valuable signals on existence of separate stock components.
Q. What factor S typically influence a trait that shows continuous variation quizlet?
What factor(s) typically influence a trait that shows continuous variation? both genetic and environmental factors.
Q. What type of mutation produces no significant change in a functional protein?
The type of mutation that produces no significant change in a functional protein is called a silent mutation.
Q. What process produces new alleles?
Recombination is a process by which pieces of DNA are broken and recombined to produce new combinations of alleles. This recombination process creates genetic diversity at the level of genes that reflects differences in the DNA sequences of different organisms.
Q. What science studies how environment affects gene expression quizlet?
What traits are influenced by more than one gene? What science studies how environment affects gene expression? epigenetics. When would monozygotic (identical) twins be produced?
Q. Which statement is an example of how environmental factors affect gene expression?
The presence of drugs or chemicals in an organism’s environment can also influence gene expression in the organism. Cyclops fish are a dramatic example of the way in which an environmental chemical can affect development.
Q. What science studies how environment affects gene expression?
Epigenetics is the study of heritable changes in gene expression that don’t involve changing the underlying DNA—effectively, software changes that cause alterations in gene function.
Q. What are some environmental factors that can influence gene expression?
Environmental factors such as diet, temperature, oxygen levels, humidity, light cycles, and the presence of mutagens can all impact which of an animal’s genes are expressed, which ultimately affects the animal’s phenotype.
