Males only have one X chromosome, so even if the gene on that chromosome is recessive there is no other gene that could dominate it.
Females have two X chromosomes, so if the gene on that chromosome is recessive there is still a chance that the gene on the other chromosome could be dominate and override it.
A plant with yellow pods can never be a hybrid because yellow pod color is controlled by a recessive allele, meaning the plant must inherit two copies of this allele to display the yellow color trait. Therefore, a plant with yellow pods necessarily has two copies of the recessive allele and cannot have a dominant allele for green pods.
crossing over can unlink genes because when crossing over occurs it a portion of one chromosome is replaced by a region of a homologous chromosome and during this the alleles that were presently on that linked gene could possibly be separated
Alleles are different forms of a gene that can produce varying traits or characteristics, such as eye color or hair texture. When we inherit alleles from our parents, the combination we receive influences how we look. For example, if one parent passed on a dominant allele for brown eyes and the other a recessive allele for blue eyes, the dominant brown allele would likely determine our eye color. Thus, alleles play a key role in determining our physical appearance.
When writing a genotype in a scientific report or research paper, it is important to use the correct format. This typically involves using the specific letters that represent the alleles for a particular gene. For example, if discussing a gene with two alleles, one dominant and one recessive, you would write the genotype as two letters, with the dominant allele capitalized and the recessive allele lowercase. It is also important to provide context and explain the significance of the genotype within the study.
This is a very short compared to the X chromosome with which it is pair. In X-linked genetic disorders (such as Duchenne's muscular dystrophy}. In the x an y type of sex determinate organisms, the genes affecting the expression are only located on X-chromosome, the y chromosome does not have its contrasting allelic gene. Hence, when a female organism has a recessive gene(for example colorblindness), its another X chromosome obtained from male gamete will mask the expression, and the female will escape color blindness. In case of male, the x-chromosome carrying a gene for colorblindness from its mother will have its expression because its counterpart (y-chromosome) does not carry its allelic form. Hence although the genes cause defects are carried by females, the males are affected more. This can be explained by drawing a Punnett Square for male and female gametic fusion possibilities.
it would be t recie
No, I think you have your terms confused.The terms "dominant" and "recessive" are applied to alleles of a genotype. A genotype is an expression (using upper- and lower-case letters) that shows what alleles an organism has for a particular locus. The two alleles (in most cases) inherited (one from mother and one from father) can either be dominant or recessive. The recessive allele is not fully expressed in the presence of the dominant allele and is only expressed when there are two recessive alleles. The genotype could be called "recessive" I suppose if the genotype is homozygous recessive. But remember that two recessive alleles as a genotype is only one possibility - in which case you can't say the "genotype is recessive".The phenotype is dependent on the genotype. If present, the dominant alleles (in simple Mendelian genetics) will determine the phenotype - what the organism's trait or characteristic is. The phenotype will never be what is coded by the recessive allele unless the genotype is two recessive alleles.
The concept of recessive alleles and the principle of segregation during gamete formation can explain how hybrid parents carrying a recessive allele can produce offspring with recessive phenotypes. When the alleles for a specific trait segregate during gamete formation, a recessive allele from each parent can combine in the offspring, resulting in the expression of the recessive phenotype.
It explains the simplest form of genetic inheritance involving traits controlled by single genes having only dominant and recessive alleles. It does not directly explain genetic inheritance involving more complex traits (e.g. multiple interacting genes, genes having many different alleles, gene suppression).
if the pea plant has 2 recessive alleles then the plant is gonna come out short.but if it has 1 recessive and one dominant allele then the plant turns out tall, because the dominant allele can be present without the recessive allele.
A plant with yellow pods can never be a hybrid because yellow pod color is controlled by a recessive allele, meaning the plant must inherit two copies of this allele to display the yellow color trait. Therefore, a plant with yellow pods necessarily has two copies of the recessive allele and cannot have a dominant allele for green pods.
A male with red-green color blindness has the genotype X^cY, where X^c represents the X chromosome carrying the recessive allele for color blindness. He inherited the recessive allele from his mother, who must have at least one X chromosome with the color blindness allele (either X^cX or X^cY). Since males inherit their X chromosome from their mothers and their Y chromosome from their fathers, the mother's genotype determines whether the son will express the condition.
In organisms, the inheritance of traits is controlled by genes, which are segments of DNA that code for specific traits. Genes are passed from parents to offspring through the transmission of chromosomes during sexual reproduction. The combination of genes inherited from both parents determines the traits that are expressed in an organism.
well actually i very much disagree, i believe that color blindness is a sex-linked trait; therefore, a girl (written Xc ) who receives one recessive allele for one red-green blindness WILL NOThave the trait, however a boy who receives one recessive WILL be recessive.
Mendel's principle of dominant and recessive alleles doe not explain why the heterozygous chickens have both red and white hair
The most dominant traits are the ones that control organisms genes.
It's spelt homozygous, which may explain the difficulty when you tried to look it up haha. I don't know your level of knowledge, but it refers to genetics. There are two alleles (allele = different type of a gene) at each locus (locus = physical location of a gene on a chromosome) on a chromosome. If these alleles are the same, they are considered homozygous. I'll give an example: we have a snake that either has spots or it doesn't, and spots is the dominant phenotype (phenotype = physically expressed trait). If it has spots, then it has the S allele, and if it doesn't have spots, it has the s allele (spots is uppercase and no spots is lowercase). If the organism does not have spots, then it is homozygous recessive with two s alleles (ss). If it had spots but had one S allele and one s allele (Ss) then it is heterozygous (two different alleles). If it had spots and had two S alleles (SS) then it is homozygous dominant. I hope that clarified.