What Would You Expect To See If The Gene For Mouth Size And The Gene For Freckles Were Linked?
What Is Genetics?
Genetics is the report of genes. Our genes bear information that gets passed from one generation to the next. For example, genes are why one child has blonde hair like their female parent, while their sibling has chocolate-brown hair like their male parent. Genes also make up one's mind why some illnesses run in families and whether babies will be male or female.
What Are Genes?
Genes are sections of DNA (deoxyribonucleic acrid) that are found inside every human cell. They're so tiny that they tin can be seen only under a powerful microscope. DNA is made of 4 chemicals that form pairs in different combinations. The combinations create codes for different genes. Each person has most twenty,000 genes. The genes code for different traits, such as centre color, trunk type, or male or female sexual activity.
What Is a Chromosome?
Inside each cell, DNA is tightly wrapped together in structures called chromosomes. Every normal prison cell has 23 pairs of chromosomes (for a total of 46):
- 22 pairs of chromosomes are the same in males and females. These are called autosomes (AW-tuh-soamz).
- The 23rd pair — the sex chromosomes — determines the sexual activity of the babe. Females have two X chromosomes and males take ane X chromosome and one Y chromosome.
How Do Genes Pass From Parent to Kid?
To form a fetus, an egg from the mother and sperm from the father come up together. The egg and sperm each have i half of a set of chromosomes. The egg and sperm together give the baby the full ready of chromosomes. So, half the baby's Dna comes from the mother and half comes from the father.
What Is a Genetic Disorder?
A genetic disorder happens when a gene (or genes) has a problem with its code, and this causes a health problem. Sometimes a genetic disorder happens when a child inherits information technology from one or both parents. Other times, information technology happens just in the kid (and the parents do not have the genetic disorder).
How Do Genetic Disorders Happen?
Different things can cause a genetic disorder, such as:
- a change (mutation) in one cistron on a
- a missing part of a chromosome (chosen a deletion)
- genes shifting from one chromosome to some other (called a translocation)
- an extra or missing chromosome
- too few or too many sex chromosomes
Looking Ahead
Scientists are learning more and more than about genetics. A worldwide research project called The Homo Genome Project created a map of all human genes. Information technology shows where the genes are located on the chromosomes. Doctors tin use this map to detect and care for or cure some kinds of genetic disorders. There is hope that treatments for many genetic disorders volition be developed in the future.
Date reviewed: October 2021
What Would You Expect To See If The Gene For Mouth Size And The Gene For Freckles Were Linked?,
Source: https://kidshealth.org/en/parents/about-genetics.html
Posted by: laplantwilesire1983.blogspot.com
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