Which Term Best Describes Genes Carried Only on the X-chromosome

Because males have only one X chromosome they are hemizygous for the genes located on the X chromosome. Sex linked is a trait in which a gene is located on a sex chromosome.

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Someone who has one abnormal gene but no symptoms is called a carrier.

. Which term best describes genes carried only on the X chromosome. Which term best describes genes carried only on the X chromosome. However one of the X chromosomes is inactivated.

If the offspring is a boy the X chromosome comes from the mother and the Y comes from the father. Duchenne muscular dystrophy DMD is a recessive sex-linked disease that is carried on the X chromosome. The X chromosome is one of the two sex chromosomes in humans the other is the Y chromosome.

The sex chromosomes form one of the 23 pairs of human chromosomes in each cell. In a sex-linked disease it is usually males who are affected because they have a. Humans and most other mammals have two sex chromosomes the X and the Y.

Since the X chromosome is so much larger than the Y chromosome most sex-linked genes are X-linked. Remember that a biological female carries 2 sets of X chromosomes XX and a biological male carries one set of the X and one set of Y chromosomes XY. A sex chromosome is a type of chromosome that participates in sex determination.

DMale characteristics only develop in the absence of X-chromosomes. 21Which term best describes genes carried only on the X-chromosome. D Males have fewer autosomal genes therefore are less able to compensate.

E Males have two Y chromosomes that generally carry mutant genes. What describes the allele that causes color blindness. It is carried on the X chromosomeIt is.

1 See answer Advertisement Advertisement danicataylorclark48 is waiting for your help. Diseases caused by mutated genes located on the X chromosome can be inherited in either a dominant or recessive manner. The term _____ is used to describe genes that do not determine gender but are carried on the X chromosome.

3 on a question 25 POINTS. Female mammals have two X chromosomes in every cell. Which term best describes genes carried only on the X chromosome.

Occasionally a mutation occurs resulting in the SRY gene being lost from theY-chromosome and added to the X-chromosome as shown in the diagram below. If we see 35 4 or 5 repeats of the pattern MAOA is present and this is a normal variant of the gene on your X chromosome. A woman with DMD and a man without the disease have a child.

38The Y-chromosome carries the SRY gene that codes for the production of testosterone in humans. By comparison to the X chromosome the much smaller Y chromosome has only about 26 genes and gene families. If only one gene in the pair is abnormal the disease does not occur or it is mild.

However women have 2 X chromosomes where men have 1 X and 1 Y. Females have two X chromosomes in their cells while males have both X and a Y chromosomes in their cells. Females carry no copies of Y-linked genes.

Answered expert verified. This is because the X chromosome is large and contains many more genes than the smaller Y chromosome. Human Pedigree Genetics Problem Set Sex linked recessive genes Genes carried on the X chromosome have a distinctive pattern of inheritance.

They only need to have one affected allele on the X chromosome C They lack homologous chromosomes. AXNY and XNXN BXnY and XNXN CXNY and XNXn DXnY and XnXn 22In humans normal color vision N is dominant over color blindness n. Sex-linked genes are genes that are inhererited through the X chromosome.

Only one of the Y chromosome genes the SRY gene is responsible for male anatomical traits. A man and woman with normal color vision produced two colorblind sons and two daughters with normal. Because males are hemizygous ie.

They have only one copy of the X chromosome and because the Y chromosome carries very few genes though those which it carries are often homologous to X linked genes. Homozygous Heterozygous Homogenous Hemizygous. In humans the term generally refers to traits that are influenced by genes on the X chromosome.

What describes the allele that causes color blindness. Question 3 1 1 pts Which of the following best describes the term used for males are because of genes carried on the X chromosome and because they only possess one X chromosome. As mentioned above the gene is carried on the X chromosome so women can either have it 1 not at all 2 on only 1 X therefore making them a carrier or 3 on both Xs.

The X chromosome spans about 155 million DNA building blocks base pairs and represents approximately 5 percent of the total DNA in cells. The word hemizygous means having one gene for a particular locus. Egg cells all contain an X chromosome while sperm cells contain an X or Y chromosome.

- 26582632 danicataylorclark48 danicataylorclark48 7 days ago Biology High School answered 25 POINTS. It is carried on the X chromosomeIt is. Carriers can pass abnormal genes to their children.

Most of the Y chromosome genes are involved with essential cell house-keeping activities 16 genes and sperm production 9 gene families. The genes for sex-linked traits are carried on either the X or Y chromosome. Since the X chromosome is so much larger than the Y chromosome most sex-linked genes are X-linked.

Because females have two copies of X-linked genes they will not be affected by. X-linked For this type of inheritance females can pass down diseased alleles to offspring through ____1__ chromosomes while males. The X chromosome is about three times larger than the Y chromosome containing about 900 genes while the Y chromosome has about 55 genes.

Since males only have one X chromosome any mutated gene on the X chromosome dominant or recessive will result in disease.

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