How would you determine whether the curl allele is dominant or recessive? Mate the stray to a non-curl cat. If any offspring have the “curl” trait it is likely to be dominant. If the mutation is recessive, then on ly non-curl offspring will result.
How would you determine whether the curl allele is dominant or recessive quizlet?
Start out by breeding the cat to get a population to work with. If the curl allele is recessive, two curl cats can have only curl kittens. If the allele is dominant, curl cats can have “normal” kittens. If the curl allele is sex-linked, ratios will differ in male and female offspring of some crosses.
How would you determine whether the curl allele is dominant or recessive How would you determine whether the curl allele is dominant or recessive matings of the original mutant cat with true breeding non Curl cats will produce both curl and uncurl F1 offspring if the curl?
You would obtain some true-breeding offspring homozygous for the curl allele from matings between the F1 cats resulting from the original curl X noncurl crosses whether the curl trait is dominant or recessive.
How can you tell if an allele is dominant or recessive in a Punnett square or genotype?
genotype = the genes of an organism; for one specific trait we use two letters to represent the genotype. A capital letter represents the dominant form of a gene (allele), and a lowercase letter is the abbreviation for the recessive form of the gene (allele).
How do you know if something is homozygous dominant or recessive?
Organisms can be homozygous or heterozygous for a gene. Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.
What offspring would you predict from the mating of a gray rooster and a black hen?
What phenotypes would you expect in the offspring of a cross between a gray rooster and a black hen? The black and white alleles are incomplete dominance, with heterozygotes being gray in color. A cross between a gray rooster and a black hen should yield approximately equal numbers of gray and black offspring.
How many variables should there be in a well designed experiment?
How many independent variables are there in a well-designed experiment? One, so you can determine a cause and effect relationship between the variable you are changing and the observed response.
Does Alkaptonuria appear to be caused by a dominant or recessive allele?
Alkaptonuria must be caused by a recessive allele. If you assume the disorder is dominant, then it is impossible for Ann and Michael, both unaffected, to have offspring that are affected (since Ann and Michael must both be homozygous recessive). 9.
What is meant by an allele?
An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. … Alleles contribute to the organism’s phenotype, which is the outward appearance of the organism. Some alleles are dominant or recessive.
Which allele is always written first?
The alleles are represented by letters. The letter chosen is usually the first letter of the trait.
How many alleles must be present in order for a trait to show up in the offspring?
The different forms of a gene are called alleles.
Genes/Two alleles must be present in order for a trait to show up in the offspring.