What is wild type phenotype?
: a phenotype, genotype, or gene that predominates in a natural population of organisms or strain of organisms in contrast to that of natural or laboratory mutant forms also : an organism or strain displaying the wild type.
What are Drosophila bristles?
The sensory bristles of Drosophila arise in stereotyped positions from small clusters of cells that express achaete–scute genes. A set of genes has now been identified that regulate achaete–scute expression and form a prepattern for sensory bristle development.
Does allele mean phenotype?
Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism. Some alleles are dominant or recessive. When an organism is heterozygous at a specific locus and carries one dominant and one recessive allele, the organism will express the dominant phenotype.
What is ax linked?
X-Linked. = X-linked is a trait where a gene is located on the X chromosome. Humans and other mammals have two sex chromosomes, the X and the Y. In an X-linked or sex linked disease, it is usually males that are affected because they have a single copy of the X chromosome that carries the mutation.
Is Black genotype or phenotype?
The appearance of an animal (or any other form of life) is considered its phenotype (think ph = physical). An animal’s genotype is its genetic make-up (think gen = genetic). Black is the phenotype of a calf with at least one black (B) allele. Red is the phenotype of a calf with two red (bb) alleles.
Why do fruit flies have bristles?
The bristles covering the body of adult Drosophila melanogaster flies form an ideal model system to assess robustness and sensitivity of bristle number to various perturbations. Adult bristles are external mechanosensory organs required for accurate perception, proprioception, locomotion and flight (Kernan, 2007).
What mode of inheritance controls skin color?
Polygenic Inheritance
Polygenic Inheritance: Human skin color is a good example of polygenic (multiple gene) inheritance. Assume that three “dominant” capital letter genes (A, B and C) control dark pigmentation because more melanin is produced.
What is Aristapedia?
: the replacement of an antennal arista by a more or less perfect leg, a not uncommon developmental aberration in drosophilas.
Is Aristapedia recessive or dominant?
Aristapedia is a recessive mutant (chromosome 3, locus 58.5) which changes the antennae into tarsus-like structures complete with claws.
What is allele example?
Alleles are different forms of the same gene. An example of alleles for flower color in pea plants are the dominant purple allele, and the recessive white allele; for height they are the dominant tall allele and recessive short allele; for pea color, they are the dominant yellow allele and recessive green allele.