A Dogs Phenotype Can Be Determined By?
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome occurs?
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During meiosis, an event known as chromosomal crossing over sometimes occurs as a part of recombination. In this process, a region of one chromosome is exchanged for a region of another chromosome, thereby producing unique chromosomal combinations that further divide into haploid daughter cells.
What is the phenotype of an offspring with TT?
The offspring with the genotypes TT and Tt will have a phenotype of tall; the offspring with the genotype of tt will have a phenotype of short. If the two alleles are the same (TT or tt), the genotype is considered purebred. If the two alleles are different (Tt), the genotype is considered hybrid.
Can the same phenotype be caused by two different genotypes?
The answer is yes, two different genotypes can result in the same phenotype. Remember, the recessive phenotype will be expressed only when the dominant allele is absent, or when an individual is homozygous recessive (tt) (Figure below).
How does a genotype result in a 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.
”
What is crossing over in meiosis and why is it important?
Crossing over helps to bring about random shuffling of genetic material during the process of gamete formation. This results in formation of gametes that will give rise to individuals that are genetically distinct from their parents and siblings.
What is crossing over in meiosis?
Crossing over, as related to genetics and genomics, refers to the exchange of DNA between paired homologous chromosomes (one from each parent) that occurs during the development of egg and sperm cells (meiosis).
What is the result of a genotype?
Phenotype means “concrete results of an organism’s genotype.” Phenotype, therefore, is observable by nature. Every trait determined by a gene, even partially, is part of its phenotype.
When two chromatids pair up what is that location called?
the centromere
How can one phenotype result from more than one genotype?
The expression of an organism’s genotype produces its phenotype. The phenotype refers to the organism’s characteristics, such as purple or white flowers. As you can see from the Figure above, different genotypes may produce the same phenotype. For example, PP and Pp genotypes both produce plants with purple flowers.J
Is it possible for two individuals to have the same phenotype but different genotypes the same genotype but different phenotypes How?
Same phenotype but different genotype is possible due to presence of dominant allele. A dominant allele , when present in genotype, always expresses itself: both in double dose and in single dose.M
What is the phenotype of the offspring in the F1 generation?
round yellow phenotype
Can two individuals have the same phenotype but different genotypes?
Same phenotype but different genotype is possible due to presence of dominant allele. A dominant allele , when present in genotype, always expresses itself: both in double dose and in single dose.M
What is the phenotype of the offspring?
Within an individual organism, the specific combination of alleles for a gene is known as the genotype of the organism, and (as mentioned above) the physical trait associated with that genotype is called the phenotype of the organism.
What was the phenotype of the offspring in F1 generation?
round yellow phenotype
What is the phenotypic ratio of the F1 generation?
In this question, the offspring phenotypes have a ratio of roughly 1:1:1:1. Since there are F1 offspring that are homozygous recessive for both traits, the white-disk parent must have carried the recessive allele for each trait. The white-disk parent is heterozygous for each gene: WwDd.