How is hair texture determined genetically?
Which best describes how the traits of an organism are determined by the DNA in their cells?
The genetic code of organisms determines their traits. … Proteins do much of the chemical work inside cells so they largely determine an organism’s traits.
What determines the instructions for a specific trait in an organism?
Traits are determined by genes and also they are determined by the interaction with the environment with genes. And remember that genes are the messages in our DNA that define individual characteristics. So the trait is the manifestation of the product of a gene that is coded for by the DNA.
Which part of a DNA molecule is responsible for direct coding of specific traits in an organism?
Gene. A segment of a DNA molecule (a sequence of bases) that codes for a particular protein and determines the traits (phenotype) of the individual. A gene is the basic unit of heredity in a living organism.
Why does hair have different textures?
Genetic factors appear to play a major role in determining hair texture—straight wavy or curly—and the thickness of individual strands of hair. Studies suggest that different genes influence hair texture and thickness in people of different ethnic backgrounds.
How did different hair textures evolve?
The short answer is: selective pressure acting on the genes responsible for hair type. Humans evolved on the African continent and from there dispersed to the rest of the world. … These genes do not directly cause hair curl but are responsible for keratin structure.
What determines the traits of an organism quizlet?
The traits of an organism are determined by its genes. … Each organism has two alleles that make up the genotype for a given trait. 3. In sexual reproduction each parent contributes ONLY ONE of its alleles to its offspring.
Which component of DNA determines the traits of an organism Quizizz?
How the amino acid sequence determines the characteristics of an organism?
Genes are segments of DNA molecules that are the instructions for building the proteins of the cell. The sequence of nucleotides in DNA determines the sequence of amino acids in the proteins. … You will be simulating the process of protein synthesis to determine the traits this organism will inherit.
How do genes determine the traits of an organism gizmo?
Genes Have Alleles
The traits an organism displays are ultimately determined by the genes it inherited from its parents in other words by its genotype. … Variant copies of a gene are called alleles and an individual’s genotype is the sum of all the alleles inherited from the parents.
What are the factors that determine an organism’s traits How are they passed down from generation to generation?
Genetic material including genes and DNA controls the development maintenance and reproduction of organisms. Genetic information is passed from generation to generation through inherited units of chemical information (in most cases genes).
How do genes determine how we look and act?
These pairs of genes then determine certain physical features or traits. The genes that you have in your body right now make up your genotype. This genotype then determines your physical appearance which is called your phenotype. In this activity you will be given two sets of chromosomes.
Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism quizlet?
Molecule x is a carbohydrate and molecule y is a nucleic acid. Which part of a DNA molecule is responsible for the direct coding of specific traits in an organism? The sequence of nucleotide bases in the DNA molecule. You just studied 49 terms!
How does DNA code for your traits?
The genetic code dictates which proteins the cell manufactures. Proteins are strands of amino acids. The sequence of nucleotides in DNA genes determines the order of amino acids in a protein. This is the direct connection between your genes and your traits.
What part of the DNA molecule is responsible for the genetic code?
stored on one of the two strands of a DNA molecules as a linear non-overlapping sequence of the nitrogenous bases Adenine (A) Guanine (G) Cytosine (C) and Thymine (T). These are the “alphabet” of letters that are used to write the “code words”.
Can hair have different textures?
Hair texture describes the circumference of your hair. There are three different hair texture types—fine medium and thick. Each hair texture type has its own traits that set it apart from other hair textures and influence the care or treatment it may need. Fine hair is the most fragile hair texture.
Why does my hair have 3 different textures?
What are the different hair textures?
There are four main types of hair texture: Type 1 – straight Type 2 – wavy Type 3 – curly and Type 4 – tightly curled. The hair type and texture can be further broken down into a b and c based on the hair’s curl pattern density porosity width and length.
What is the purpose of different hair types?
What is a hair texture?
Is hair texture dominant or recessive?
Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms that means that if one parent gives you two curly haired genes and the other parent gives you a pair of straight-haired genes you’ll be born with curly hair.
What factor determines the trait that a given gene will express?
The expression of genes in an organism can be influenced by the environment including the external world in which the organism is located or develops as well as the organism’s internal world which includes such factors as its hormones and metabolism.
What do we call it when two or more genes determine an organisms trait?
A polygenic trait is a characteristic sometimes we call them phenotypes that are affected by many many different genes.
Where does an organism gets its unique characteristics and what makes you unique?
Where does an organism get its unique characteristics? Characteristics are determined by factors that are passed from one parental generation to the next. 1) An individual’s characteristics are determined by the factors that are passed from parenr to child (genes). 2) Some alleles are dominant & others are recessive.
What is a trait Quizizz?
A natural behavior that an organism inherits.
What does DNA stand for Quizizz?
What does DNA stand for? Nucleic Acid. Ribonucleic Acid. Deoxyribose. Deoxyribonucleic Acid.
Why do different organisms have different amino acid sequences?
A gene’s DNA sequence determines the order of amino acids that make up a protein so changes in the DNA sequence often result in changes in the amino acid sequence as well.
How do the differences in amino acid sequences lead to different protein functions?
How do the differences in amino acid sequences lead to different protein functions quizlet?
How do the differences in amino acid sequences lead to different protein functions? Different amino acids produce different proteins based on the bonds formed between them. What causes the changes in protein structure through the three or four levels of structure?
How do genes determine the traits of an organism Brainly?
Explanation: The traits an organism displays are ultimately determined by the genes it inherited from its parents in other words by its genotype. … Each distinct gene chiefly controls the production of specific proteins which in turn affects the traits of the individual.
What do genes determine?
What factors can affect an organism’s traits?
Food temperature sunlight and water are examples of environmental factors that can affect an organism’s traits. Many characteristics of plants and animals involve both inheritance and the environment. Learned experiences can change animal behavior and affect animal traits as they develop.
Why do we have different traits?
Despite sharing some characteristics with our peers and our family members every one of us has a unique combination of traits. … Some traits are controlled by genes passed from parent to child others are acquired through learning but most are influenced by a combination of genes and environmental factors.
The basic idea behind this approach is that two species have the “same” gene because they inherited it from a common ancestor. … In general the more DNA differences in homologous genes (or amino acid differences in the proteins they encode) between two species the more distantly the species are related.
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