Genetics Questions
Asked by Users

How can you distinguish whether a mutant trait is an inheritable or environmental effect?  sex linked

If a husband and wife have the ABO blood group genotypes IaIb and ii, what ABO blood types can their children have ?  Click on post comments to answer.

Note: read our review on blood types.

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

Crossing over involves the exchange of pieces of DNA between what?  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.

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

What is the difference between a monohybrid cross and a dihybrid cross?  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 ...

When a red snapdragon and a white snapdragon produce a pink snapdragon, what has occurred?  Click on post comments to answer.

Gregor Mendel used pea plants to study what?  Flowering?

How different mutations can be seen in a karyotype?  I have no idea,

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

How can a couple affected by phenylketonuria have a normal child?  ?

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?

If a heterozygous dominant tall pea plant is crossed with a short pea plant, what is the expected phenotypic ratio of tall:short plants?  1 short, 1 tall.

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 are the similarities and differences between the segregation of genes and that of chromosomes?  Don't know yet.

Is sickle cell disease an example of pleiotrophy or heterozygous dominance?  I think it is heterozygous dominance.

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

Is it possible for two blue eyed people to have a brown eyed offspring?  Help settle this debate.

Outline some genetic defects and explain how they can be detected?  albinism

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 ...

How can we alter the structure of genes?  Answer?

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

What is the condition in which an organism has extra sets of chromosomes?  definition

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

If father blood group is MN & mother is of N group the possible blood group of the child is?  it may be MN

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 ...

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 ...

What does the term "diploid" mean? Also, are humans diploids?  Click on post comments to answer.

How was Mendel's experiments performed?  Experiment with peas convinced him?

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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.

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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

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What kind of mutation is one that has only one base pair change but the others stay the same?  Click on post comments to answer.

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 ...

In a cross between two homozygous parents, the offspring from the first generation always have...  Click on post comments to answer.

Genes produce a phenotype by?  How does the gene produce a phenotype?

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How many DNA molecules do we have in each of our somatic cells?   There are 46 chromosomes and 2 sets of 23.

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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 ...

if two gene pair Aa and Bb are assorted independently with A dominant to a and B dominant to b, what are the resulting probabilities?  I think an AABB zygote from the cross AaBb x AABB.

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How to know if an inherited trait is sex linked or autosomal?  Click on post comments to answer.

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.

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What is translocation?  This question is in terms of Genetics.

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

The number of chromosomes is determined by counting what structure ?  Click on post comments to answer.

What is offspring that results from crosses between true-breeding parents with different traits called?  Click on post comments to answers.

Wtha is offspring that results from crosses between parents with different traits called?  Hybrids.

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What type of allele dominance occurs when both alleles are active and expressed?  Complete dominance.

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What are traits that are produced by gene interactions?  Multiple alleles?

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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

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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?

Why is amniotic fluid collected during prenatal testing for abnormal chromosomes?  To obtain fetal cells?

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!!

Is a baby guaranteed from genetic disorder if the chromosome configuration appears normal after karyotyping?  Please, explain.

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

Who coined the term Genetics?  Carl Correns.

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

What is inheritance of genes (traits) in the sex chromosomes?  Heredity?

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 ...

If the separation of the zygote occurs very early after fertilisation, then twins each have what?  Don't get what to write, help me...

What are the first commercially available recombinant proteins?  Antibodies?

How many different gametes can an RRYy parent form? What are they?  Punnett square of dihybrid cross.