What is the most common phenotype?
The distribution of the various phenotypes among males and females was comparable, with DCCee being the most common phenotype observed in both sexes.
Which of the following is used to define a phenotypic characteristic resulting?
Which of the following is used to define a phenotypic characteristic resulting from the expression of two or more genes? polygenic inheritance.
What is the genotype of the man quizlet?
The genotype of the man is DdBb. The genotype of the woman is ddBb. The genotype of the gametes produced by the man is 25% DB, 25% Db, 25% dB, 25% db. The genotype of the gametes produced by the woman is 50% dB and 50% db.
What is Nondisjunction quizlet?
Nondisjunction. the failure of one or more pairs of homologous chromosomes or sister chromatids to separate normally during nuclear division, usually resulting in an abnormal distribution of chromosomes in the daughter nuclei.
What is the most common allele in a population?
Terms in this set (9) The dominant allele is always the most common allele in the gene pool.
Are dominant phenotypes always the most common in a population explain?
Dominant traits are not always the most common. Some people may think that dominant trait is the most likely to be found in the population, but the term "dominant" only refers to the fact that the allele is expressed over another allele. An example of this is Huntington's disease.
What are the resulting phenotypes called?
Alleles produce phenotypes (or physical versions of a trait) that are either dominant or recessive. The dominance or recessivity associated with a particular allele is the result of masking, by which a dominant phenotype hides a recessive phenotype.
What is the term phenotype?
The term "phenotype" refers to the observable physical properties of an organism; these include the organism's appearance, development, and behavior. An organism's phenotype is determined by its genotype, which is the set of genes the organism carries, as well as by environmental influences upon these genes.
Is PP genotype or phenotype?
These are exactly the same genotype. The other possible genotypes of the offspring are PP and pp. The combinations PP, PP, and pP have the same phenotype-purple flowers. This is because each contains at least one dominant allele (P).
What are the heterozygous genotypes?
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).
What is a monosomy?
The term "monosomy" is used to describe the absence of one member of a pair of chromosomes. Therefore, there are 45 chromosomes in each cell of the body instead of the usual 46.
Is aneuploidy a trisomy?
Trisomy is the most common aneuploidy. In trisomy, there is an extra chromosome.
Is the dominant allele the most common?
Dominant traits are not always the most common. Some people may think that dominant trait is the most likely to be found in the population, but the term "dominant" only refers to the fact that the allele is expressed over another allele. An example of this is Huntington's disease.
Are dominant phenotypes always the most common in a population quizlet?
Dominant alleles are not the most common in a population because most organisms have just as many recessive alleles as dominant alleles.
What are dominant phenotypes?
A dominant phenotype refers to a trait which is expressed in one of two conditions: the inheritance of two dominant alleles (homozygous dominant) or the inheritance of one dominant and one recessive allele (heterozygous dominant).
Which recessive trait is the most common?
Hair Without White Streaks You don't see a lot of people walking around with Bride-of-Frankenstein hair. So you might be surprised to know that having streakless hair, as the majority of people do, is a recessive trait.
When many alleles exist for the same gene the most common phenotype?
the wild type Note that when many alleles exist for the same gene, the convention is to denote the most common phenotype or genotype in the natural population as the wild type (often abbreviated “+”).
What phenotype means?
an observable trait "Phenotype" simply refers to an observable trait. "Pheno" simply means "observe" and comes from the same root as the word "phenomenon". And so it's an observable type of an organism, and it can refer to anything from a common trait, such as height or hair color, to presence or absence of a disease.
What is a phenotype quizlet?
Phenotype. An organism's appearance or other detectable characteristic. Gene. One set of instructions on a strand of DNA for an inherited trait.
What phenotype is AA?
Table 4-5. Correlation of ABO phenotypes and genotypes.
| Phenotype | Possible Genotype |
|---|---|
| A | AA or AO |
| B | BB or BO |
| AB | AB |
| O | OO |
What is genotype BB?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB.
What is the phenotype of heterozygote?
Heterozygous individuals have a phenotype somewhere in the middle, what people might call “wavy” hair. In a heterozygous individual, only one curly allele is present, and only half the amount of protein can be made. This causes the hair to be about as half as curly as in a homozygous curly individual.
What is homozygous genotype?
Listen to pronunciation. (HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.
What is trisomy and monosomy?
Specifically, a trisomy is when a person has three of a particular chromosome, instead of the usual two. A monosomy is when they just have one chromosome instead of the usual two.
What is Nullisomic and Monosomic?
Nullisomy – the loss of both pairs of homologous chromosomes; individuals are called nullisomics and their chromosomal composition is 2N-2. Monosomy – the loss of a single chromosome; individuals are called monosomics and their chromosomal composition is 2N-1.
What is monosomy?
The term "monosomy" is used to describe the absence of one member of a pair of chromosomes. Therefore, there are 45 chromosomes in each cell of the body instead of the usual 46.
What is monosomy and trisomy?
Monosomy is a term to describe the absence of one member of a chromosome pair, resulting in a clone with 45 chromosomes in the case of a single monosomy. Conversely, the termtrisomy describes the presence of an extra chromosome (three copies instead of one pair); a single trisomy results in cells with 47 chromosomes.
Are dominant phenotypes always the most common?
Dominant traits are not always the most common. Some people may think that dominant trait is the most likely to be found in the population, but the term "dominant" only refers to the fact that the allele is expressed over another allele. An example of this is Huntington's disease.
Are dominant phenotypes always the most common in a population?
Dominant traits are not always the most common. Some people may think that dominant trait is the most likely to be found in the population, but the term "dominant" only refers to the fact that the allele is expressed over another allele. An example of this is Huntington's disease.
What is heterozygous phenotype?
Heterozygous individuals have a phenotype somewhere in the middle, what people might call “wavy” hair. In a heterozygous individual, only one curly allele is present, and only half the amount of protein can be made. This causes the hair to be about as half as curly as in a homozygous curly individual.