This is very interesting question, asked many times in exams............ The observation that children with light-colored eyes are likely to have parents with light-colored eyes doesn't provide conclusive information about whether the trait for light eye color is dominant or recessive. Eye color isRead more
This is very interesting question, asked many times in exams…………
The observation that children with light-colored eyes are likely to have parents with light-colored eyes doesn’t provide conclusive information about whether the trait for light eye color is dominant or recessive. Eye color is a complex trait influenced by multiple genes, and its inheritance doesn’t follow a simple Mendelian pattern.
Mendelian inheritance involves the transmission of traits from one generation to the next based on the interaction of dominant and recessive alleles of a single gene. In the case of eye color, it is influenced by the interaction of multiple genes, each with multiple alleles. Additionally, environmental factors can also play a role in eye color determination.
The genetics of eye color are more accurately described as polygenic, meaning that multiple genes contribute to the phenotype (observable trait), and the interaction of these genes is not as straightforward as dominant or recessive. Therefore, eye color inheritance is more complex than a simple Mendelian trait.
While there may be a tendency for children to share eye color with their parents, this doesn’t necessarily mean that the trait follows a clear dominant or recessive pattern. It’s also worth noting that variations in eye color can occur even among individuals with the same eye color, indicating the complexity of the genetic and environmental factors involved.
In summary, based on the observation alone that children with light-colored eyes tend to have parents with light-colored eyes, we cannot definitively conclude whether the trait for light eye color is dominant or recessive without a more detailed understanding of the specific genes and alleles involved in eye color determination.
Sex of an infant is determined by the type of sex chromosome contributed by the male gamete not female gamete. A male produces two types of sperms - one type bears 22 + X composition and the other, 22 + Y. Therefore, a male has 50 % sperms with X - chromosomes and other 50 % with Y – chromosome. WeRead more
Sex of an infant is determined by the type of sex chromosome contributed by the male gamete not female gamete. A male produces two types of sperms – one type bears 22 + X composition and the other, 22 + Y.
Therefore, a male has 50 % sperms with X – chromosomes and other 50 % with Y – chromosome.
We are humans and we have 23 pairs of chromosomes. But the sex of an infant is particularly, determined by the type of sex chromosome contributed by the male gamete. Any one of the two types (22 + X types, 22 + Y types) of sperms can fertilise the egg.
Let assume – If a Y – bearing sperm fertilises the egg, the zygote will be XY (which is male) and when an X – bearing sperm fertilises the egg, the resulting zygote will be XX (which is female). So, the ratio of X – Chromosome and Y – Chromosome in male gamete is 50 : 50. Hence,
statistical the probability of male child or a female child infant is also 50 : 50.
4) A study found that children with light-coloured eyes are likely to have parents with light-coloured eyes. On this basis, can we say anything about whether the light eye colour trait is dominant or recessive? Why or why not?
This is very interesting question, asked many times in exams............ The observation that children with light-colored eyes are likely to have parents with light-colored eyes doesn't provide conclusive information about whether the trait for light eye color is dominant or recessive. Eye color isRead more
This is very interesting question, asked many times in exams…………
The observation that children with light-colored eyes are likely to have parents with light-colored eyes doesn’t provide conclusive information about whether the trait for light eye color is dominant or recessive. Eye color is a complex trait influenced by multiple genes, and its inheritance doesn’t follow a simple Mendelian pattern.
Mendelian inheritance involves the transmission of traits from one generation to the next based on the interaction of dominant and recessive alleles of a single gene. In the case of eye color, it is influenced by the interaction of multiple genes, each with multiple alleles. Additionally, environmental factors can also play a role in eye color determination.
The genetics of eye color are more accurately described as polygenic, meaning that multiple genes contribute to the phenotype (observable trait), and the interaction of these genes is not as straightforward as dominant or recessive. Therefore, eye color inheritance is more complex than a simple Mendelian trait.
While there may be a tendency for children to share eye color with their parents, this doesn’t necessarily mean that the trait follows a clear dominant or recessive pattern. It’s also worth noting that variations in eye color can occur even among individuals with the same eye color, indicating the complexity of the genetic and environmental factors involved.
In summary, based on the observation alone that children with light-colored eyes tend to have parents with light-colored eyes, we cannot definitively conclude whether the trait for light eye color is dominant or recessive without a more detailed understanding of the specific genes and alleles involved in eye color determination.
See lessIn human beings, the statistically probability of getting child either a male or female child is 50 : 50. Give suitable explanation for your answer.
Sex of an infant is determined by the type of sex chromosome contributed by the male gamete not female gamete. A male produces two types of sperms - one type bears 22 + X composition and the other, 22 + Y. Therefore, a male has 50 % sperms with X - chromosomes and other 50 % with Y – chromosome. WeRead more
Sex of an infant is determined by the type of sex chromosome contributed by the male gamete not female gamete. A male produces two types of sperms – one type bears 22 + X composition and the other, 22 + Y.
Therefore, a male has 50 % sperms with X – chromosomes and other 50 % with Y – chromosome.
We are humans and we have 23 pairs of chromosomes. But the sex of an infant is particularly, determined by the type of sex chromosome contributed by the male gamete. Any one of the two types (22 + X types, 22 + Y types) of sperms can fertilise the egg.
Let assume – If a Y – bearing sperm fertilises the egg, the zygote will be XY (which is male) and when an X – bearing sperm fertilises the egg, the resulting zygote will be XX (which is female). So, the ratio of X – Chromosome and Y – Chromosome in male gamete is 50 : 50. Hence,
statistical the probability of male child or a female child infant is also 50 : 50.
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