Genetics Questions
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What Others Have Asked

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What are the different levels of severity of Proteus Syndrome and how do those levels of severity of Proteus Syndrome affect the patient? 
I would like to know about the different levels of severity of Proteus Syndrome and how it affects the patient. Why do these levels of severity occur? …

In a genetic cross between two flowering plants that are heterozygous for the color trait, red flowers (R) are dominant to white flowers (r). What fraction of the offspring should have red flowers? 
In a genetic cross between two flowering plants that are heterozygous for the color trait, red flowers (R) are dominant to white flowers (r). What fraction …

An individual's genotype for an inherited trait is the? 
A.) set of alles carried for the trait B.) sex of the individual in relation to the trait C.) physical appearance of the trait D.) family's …

Color blindness is controlled by?  
Click on post comments to answer.

What is the principle of dominance? 
Click on post comments to answer.

Dominant alles mask the effects of recessive alleles. True or false? 
True or false? Note: Good question. Click on post comments to answer.

What are pleiotropic genes?  
Click on post comments to answer.

10 genetic questions. 
Please answer the following 10 questions below about human genetics. Achondroplasia (dwarfism) is an autosomal dominant disorder.A dwarf mother and …

How does the inheritance of diseases occur? 
Please comment fast, I need this answer urgently...

If after gel electrophoresis dna show identical bands and pattern samples contain what? 
Same amount of DNA, same amount of molecules or fragments of same size. Study Genetics .

What causes an abnormal karyotype in humans? 
What are the most common causes? Read Karyotype and Genetic Diseases .

What is the genotypic ratio of f2 generation between homozygous dominant and heterozygous dominant? 
B=black,b=white. B is dominant over b. Parental generation is BB cross Bb. What is the genotypic ratio of f2 generation? Read Genetics .

What is the law of hybridization? 
Mixing genes? Study Genetics .

In one of mendel's studies, he found that the allele for purple flowers was dominant over the allele for white flowers... 
Show the cross of one plant with pure-purple flowers and a second plant with white-flowers. Read Genetics .

A level biology assignment: what are the effects on the metabolism of bacterium when insulin is introduced?  
I've answered: describe how genetic information is introduced into micro-organisms using insulin as an example. I'm stuck on what happens to it's metabolism …

Why does gene linkage limit the variability of an organism? 
closer to chromosomes? Study Genetics .

When doing a genetic cross, why is it necessary to remove the parent flies before the pupae have hatched ? 
When doing a genetic cross, why is it necessary to remove the parent flies before the pupae have hatched? Study Genetics .

Since O type has Anti-A and Anti-B antibodies, how can O be given to AB, A or B ? 
Are only RBCs donated or the whole blood, if whole blood, i think it would create a problem for the receiver . :/ Study Blood Types Review .

What are post-mendelian theories? 
Study Evolution Theory .

In a PCR followed by electrophoresis, what gets assorted by size? 
I am thinking it's DNA, other choices include rna, cells, antigen, or antibodies. Read Genetic Engineering .

If we have got the sequences of two alleles of a single gene, can we distinguish which sequence belongs to the dominant allele and which one is the other? 
I know that there is a difference between dominant and recessive alleles sequence. But, what's your idea if we have the two alleles sequences and we want …

Is there any relationship among anti-Rhesus, gender and death? 
I mean if a guy don't have anti-rhesus, would it be more likely for him to die than a girl without anti-rhesus? Study Blood Types Review .

What is mutation? 
Study Karyotype and Genetic Diseases .

Define diseases cause by ploidy in humans. 
Study Karyotype and Genetic Diseases .

Gene Pairs 
The gene pair is the set of alleles at a locus in the homologous chromosomes. One of the alleles if the gene pair came from the biological mother, the …

What does it mean that someone has a little bit of extra material on the x chromosome? 
You may find answer here: Karyotype and Genetic Diseases

How can there be an XX male phenotype and an XY female phenotype? 
How can there be an XX male phenotype and an XY female phenotype?

What are the steps followed in human gene cloning technique? 
1.How human nucleus can be transfused in human ? 2. Is there any need of stem cell to develop the clone's body ?

Could scientists come to know before inserting the gene from another species the danger it could perhaps bring later? 
Click on post comments to answer. For studying more than 1800 Bioloqy questions correctly answered, download our ebook .

What is the importance of linkage and crossing over of genes? 
Click on post comments to answer. For studying more than 1800 Bioloqy questions correctly answered download our ebook .

How do scientist use punnett squares to predict inheritance? 
How can punnett squares predict inheritance?

What is double crossing over? 
Crossing over is the exchange of segments of chromosomes, and thus the exchange of DNA, but what exactly is double crossing over and what is its impact …

What is the difference between epistasis and dominance? 
In epistasis two allells are located in same locus but they are located in different locus.

What is oskar? 
Oskar is a gene needed for the development of embryo in drosophila embryo in their early stage.

Discuss the attainment of Hardy-Weinberg equilibrium in a founder population in which the allelic frequencies of an X-linked trait is different in males and females. 
Discuss the attainment of Hardy-Weinberg equilibrium in a founder population in which the allelic frequencies of an X-linked trait is different in males …

What are holandric genes? 
This is incorrect - it has been disproven. "A widely known holandric gene is the one that conditions hypertrichosis pinnae (hair in the ears), a phenotype …

What is the role of multiple alleles in blood groups? 
What is the role of multiple alleles in blood groups?

How does a person with group AB survive from diseases yet they dont have antibodies? 
The AB blood group has a combination of blood group A and B which are codominance.

What is point mutation? Give one example. 
What is point mutation? Give one example.

What is the difference between epistasis and linkage? 
What is the difference between epistasis and linkage?

Are plasmids in the biotechnology field of agriculture or industry? 
Many of the answers are in our main pages related to this subject.

What is meant by inbreeding? 
in point or essay?

Do parents have same blood group as their children? 
For example a woman having blood group A married to a man having blood group A than what would be the blood group of their offspring?

Which trait below would show more if both recessive? 
BB= black bb= brown EE= alows the expression of B/b ee= yellow, and bbee is the trait given.

What is the difference between genes and DNA? 
Genes and dna are parts of chromosomes?

Differentiate between linkage and independent assortment. 
Both the phenomena don't occur simultaneously, i.e. if linkage takes place, independent assortment don't find an expression.

Who is responsilbe, in the cell, for the elevation of the temperature to 94ºC during the PCR? 
During the PCR, in one of its phase, the temperature reaches 94ºC. Who is the responsible, in the cell, for this temperature increase?

What are Hox genes and what is their evolutionary importance? 
Hox genes appear to have evolutionary importance, however I cant understand what they are, how they work and consequently I cant understand what is their …

What is the percentage of genes that are the same as porifera? 
How many genes do we share with sponges? Give me a percent.

Why are boys and girls usually born in equal numbers? 
I need the answer asap, please. Thanks.

Is there any difference between linkage and linkage map? 
Linkage occurs when two genes are found in the same chromosome.

How can you tell if there's a lethal allele when given a problem? 
In a Belgian horses, coat coloration can either be chesnut brown or roan (brown with white mixed in). The coloration pattern in these horses is governed …

If AABB is cross with aabb and the f1 is test cross, what % of the test cross progeny will be aabb, if the genes are unlinked? 
if AABB is cross with aabb and the f1 is test cross, what % of the test cross progeny will be aabb, if the genes are unlinked?

Genetics interactions 
A dominant gene V in humans causes certain areas of the skin to become depigmented, a condition called "vitiligo." Albinism is the complete lack of pigment …

How was Mendel's experiments performed? 
Experiment with peas convinced him? Click on post comments to answer.

How to do a Punnet square? 
Click on post comments to answer.

Can two people with attached earlobes have a baby with unattached earlobes? 
My wife and I have attached earlobes and our daughter's are free. Click on post comments to answer.

In a cross between two homozygous parents, the offspring from the first generation always have _____? 
a)the same genotype b) a different phenotype c) the same genotype and phenotype d) a different genotype and phenotype Click on post comments to …

What is mutation? 
Mutation in heritable changes in choromosomes (genetic material). It is a very useful as well as harmful process because some changes are usable and harmful …

Genes produce a phenotype by? 
How does the gene produce a phenotype? Click on post comments to answer.

How many DNA molecules do we have in each of our somatic cells?  
There are 46 chromosomes and 2 sets of 23. Click on post comments to answer.

What would occur if both X chromosomes were to remain active in a female? 
I understand that if you have extra chromosomes it causes illnesses such as Down Syndrome, but I'm curious if a female with the normal two healthy X chromosomes …

A Genetics question 
In the japanese morning glory (pharbitis nil) true breeding strains from northern and southern Japan with blue flowers were hybridized. The F1 hybrids …

What is the advantage of using heat stable DNA polymerase in PCR? 
Have no idea what the answer is. Click on post comments to answer.

What is translocation? 
This question is in terms of Genetics. Click on post comments to answer.

What is meant by Genetics? 
Click on post comments to answer.

What type of allele dominance occurs when both alleles are active and expressed? 
Complete dominance. Click on post comments to answer.

What are traits that are produced by gene interactions? 
Multiple alleles? Click on post comments to answer.

300 kernels resulted from the mating of several corn plants that were all heterozygous for kernel color production (Pp x Pp). How many of these kernels would probably have purple color?  
Assume normal Mendelian ratios: purple is dominant over yellow-remember this is a monohybrid cross. a.65 b. 75 c.150 d.225 Click on post comment …

What fraction of normal drosophila offspring does not inherit a maternal x chromosome? 
What fraction of normal drosophila offspring does not inherit a maternal x chromosome?

Is it possible father and mother RH positive but the mother is hybrid? 
Father and mother RH positive but the mother is hybrid?

Is the inheritance of the colour of flowers of Mirabilis jalapa an example for incomplete dominance or codominance? 
In Mirabilis jalapa three colours of flowers are found as red ,pink and white.Is the pink colour flower a different form or an inter mediate form?

in which way Mendel was very fortunate? 
Fortunately for him all the seven pairs of contrasting characters were located on separate chromosomes!!

What is a gene? Explain. 
A gene is a segment of DNA that directs the production of RNA and protein.

What is the phenotype if the genotype is DD ? 
What is the phenotype if the genotype is DD?

What parent determine the child's frame size? 
I have two children and one has a small frame thin and wiry and the other has a large frame very stocky. Why are they different and what parent genetics …

What are the effects of a serine protease on drosophila development? 
I know it has something to do with ventral and dorsal axis but that's all I can remember.

Why can't a living being have 100% DNA configuration similar to other living being (although 99.9% is similar why not 100%)? 
Of course because of crossing over and meiosis but defects in this process can bring about similarities mentioned above...right?

Why do identical twins have different different finger prints even though they share the almost same genome? 
The twins in wombs move or float and thus every movement accompanies change in the patterns of the skin touching the inner membrane of the placenta, thus …



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