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Are the fathers genes always the dominant genes?
No - the father's genes are not always the dominant genes.
What is the relationship between chromosomes and genes and between genes and DNA?
Chromosomes contain genes which are segments of DNA.
What located on chromosomes and carry hereditary instructions?
the chromosomes carry the genes
Are chromosomes genes or are genes chromosomes?
Genes are stretches of DNA that contain code to make proteins. Chromosomes are made up of numerous Genes.
How are genes made by meiosis?
Genes are not made by meiosis. Genes are sequences of DNA found on the chromosomes.
Are polygenic genes dominant genes?
Polygenic genes are usually dominant genes.
Are the fathers genes always the dominant genes?
No - the father's genes are not always the dominant genes.
What are defective genes?
defective genes are genes that are defective
How can hox genes provide evidence of evolution?
Hox genes are a group of related genes that specify the anterior-posterior axis and segment identity of metazoan organisms during early embryonic development. These genes are critical for the proper number and placement of embryonic segment structures (such as legs, antennae, and eyes). Homeotic genes are defined by a DNA sequence known as the homeobox, which is a sequence of 180 nucleotides that code for a protein domain known as the homeodomain. The protein products of homeotic genes belong to a class of proteins known as transcription factors, all of which are capable of binding to DNA, thereby regulating the transcription of genes. Just as homeotic genes regulate realisator genes, they are in turn regulated themselves by gap genes and pair-rule genes, which are in their turn regulated by maternally-supplied mRNA. This results in a transcription factor cascade: maternal turns on gap or pair-rule genes; gap and pair-rule genes turn on homeotic genes; then, finally, homeotic genes turn on realisator genes that cause the segments in the developing embryo to differentiate. Incorrect expression of homeotic genes can lead to major changes in the morphology of the individual. Homeotic mutations were first identified in 1894, when William Bateson noticed that floral stamens occasionally appeared in the wrong place; he found for example flowers in which the stamens would grow in the place where petals normally grow. In the late 1940s, Edward Lewis began studying homeotic mutation on Drosophila melanogaster which caused bizarre rearrangements of body parts. Mutations in the genes that code for limb development can cause deformity or lead to death. For an example, mutations in the Antennapedia gene cause legs to develop on the head of a fly instead of the antenna. Another famous example in the Drosophila melanogaster is the mutation of the Ultrabithorax homeotic gene, which specifies the 3rd thoracic segment. Normally, this segment displays a pair of legs and a pair of halteres (a reduced pair of wings used for balancing). In the mutant lacking functional Ultrabithorax protein, the 3rd thoracic segment now expresses the same structures found on the segment to its immediate anterior, the 2nd thoracic segment, which contains a pair of legs and a pair of (fully developed) wings. These mutants sometimes occur in wild populations of flies, and it was these mutants that led to the discovery of homeotic genes.
Does prokaryotes have genes?
Of course they have genes. They need genes for survival and reproduction.
What is the difference between chromosomes and genes?
DNA is in genes, and genes are in chromosomes.
Do dominant genes affect recessive genes?
The dominant genes take over, and then the recessive genes hide away
Are genes located on the autosomal called sex linked genes?
No, genes located on the autosomes are not called sex linked genes. Only genes located on the sex chromosomes are called sex linked genes.
What is the relationship between chromosomes and genes and between genes and DNA?
Chromosomes contain genes which are segments of DNA.
Which genes are dominant and which are recessive?
Dominant genes are always expressed in preference to recessive genes in cased where both genes are present.
What is the name of the series of genes that controls organs and tissues that develop in the embryo?
Hox genes (:
What kind of factors are caused by genes?
Genes produce proteins and what we are is determined by genes.
