When only one allele is required to express a trait, as is the case with the curly-winged mutation, its inheritance pattern is dominant. The genotype of a curly-winged fly could be
Cy/+ or Cy/Cy
. An example of a dominantly inherited trait in humans is that for achondroplasia, a form of dwarfism.
What is the genotype of Drosophila?
Drosophila, are diploid, with two sets of chromosomes and therefore two alleles at each autosomal locus. If both alleles are identical, the individual is a homozygote and is described as homozygous. If the alleles differ from each other, the individual is a heterozygote and is described as heterozygous.
What is the genotype of a fruit fly that is homozygous for curly wings?
When only one allele is required to express a trait, as is the case with the curly-winged mutation, its inheritance pattern is dominant. The genotype of a curly-winged fly could be
Cy/+ or Cy/Cy
. An example of a dominantly inherited trait in humans is that for achondroplasia, a form of dwarfism.
What genotype is FF homozygous or heterozygous?
| Genotype Phenotype | F F Homozygous dominant No cystic fibrosis (Normal) | F f Heterozygous Carrier (has no symptoms but carries the recessive allele) | f f Homozygous recessive Cystic fibrosis (has symptoms) |
|---|
What are the heterozygous genotypes?
Listen to pronunciation. (HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include
one normal allele and one mutated allele or two different mutated alleles
(compound heterozygote).
Is PP genotype or phenotype?
A simple example to illustrate genotype as distinct from phenotype is the flower colour in pea plants (see Gregor Mendel). There are three available genotypes, PP (
homozygous dominant
), Pp (heterozygous), and pp (homozygous recessive).
Why are fruit flies useful for genetics?
Fruit flies have
a very simple genetic structure
, which makes them ideal for genetic research. It is useful to study mutant fruit flies, as their quick reproduction rate allows scientists to observe the advantages and disadvantages of certain mutations.
Why do men Mutagenize?
Usually you mutagenize males with EMS or X-rays. Males are used
because they don’t need to be virgins
. Also they are more resistant to DNA damage, which means they can tolerate enough damage to get useful mutations.
What is the genotype of a heterozygous fly?
Consider, for instance, the genes that code for eye and body color in the fruit fly Drosophila melanogaster. In these flies, the brown-eye allele (b) is recessive to the normal red-eye allele (B). … However, a fly that has a normal body color may have the homozygous genotype EE or the heterozygous genotype
Ee
.
What is the genotype for wild type?
Note that when many alleles exist for the same gene, the convention is to denote the most common phenotype or genotype among wild animals as the wild type (often abbreviated
“+”
); this is considered the standard or norm.
Is AA homozygous or heterozygous?
If an organism has two copies of the same allele, for example AA or aa,
it is homozygous
for that trait. If the organism has one copy of two different alleles, for example Aa, it is heterozygous. Keep in mind that an organism can’t simply be ‘homozygous,’ period.
What is the difference between heterozygous and homozygous inheritance?
Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a
homozygous genotype
, where an individual inherits identical forms of a particular gene from each parent.
Which parent is homozygous for the dominant trait?
When true-breeding, or homozygous, individuals that differ for a certain trait are crossed, all of the offspring will be heterozygous for that trait. If the traits are inherited as dominant and recessive, the
F
1
offspring will all exhibit the same phenotype as the parent
homozygous for the dominant trait.
What is an example of heterozygous?
If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you
have one allele for red hair and one allele for brown hair
. The relationship between the two alleles affects which traits are expressed.
What is another name for heterozygous?
In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for heterozygous, like:
homozygous
, genotype, allele, recessive, MTHFR, C282Y, rb1, heterozygote, premutation, wild-type and homozygote.
Are blue eyes homozygous or heterozygous?
People who have recessive traits, like blue eyes or red hair, are
always homozygous for that gene
. The recessive allele is expressed because there isn’t a dominant one to mask it.
