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How can recessive traits such as brown fur be passed from generation to generation without any offspring having brown fur?
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What crosses will result in dominant phenotype offspring?
Don't give us the options then!! If one parent had 2 dominant genes then all offspring would have dominant phenotype, the same goes for both parents having dominant genes.
What can a punnett square tell us?
Punnett squares demonstrate the percentage of traits that are passed on from one generation to the next. It shows the pairings of dominant and recessive genes and what percentage there is of the next generation having those particular traits.
If both parents are rhesus positive can they have a negative baby?
Yes, if both parents each have the dominant positive AND recessive negative genes, they have a 1 in 4 chance of having a child with rh-neg blood. Both mother and father would have to pass the recessive gene to the offspring.
What are the ratios of a heterozygous dihybrid cross and what is the probability of having the recessive trait show?
9:3:3:1 The probability of having both recessive traits is 1:16.
Why do persons having a mutation pass this condition on to their offspring?
Genes are passed down from parents to offspring. That's why the mutant gene would be in the offspring.
An individual heterozygous for a trait and an individual homozygous recessive for the trait are crossed and produce many offspring?
The offspring has a 50% chance of the dominate trait (while being heteroygous) and a 50% chance of having the recessive trait ( homozygous recessive).
Why were heterozygous individuals called carriers for non-sex-linked and x-linked recessive patterns of inheritance?
I don't know and don't care
According to mendel what genes disappear in f1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both a dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
According to Mendel what kind of genes disappear in F1 pea plants?
No genes disappear in the F1 generation. Each of the F1 plants was heterozygous, having both dominant and recessive alleles. The recessive phenotype disappears in the F1 generation because all members of that generation carry a dominant allele. In the F2 generation, the recessive phenotype will reappear.
Why do animals of the same species continue to live from generation to another?
having offspring. i.e reproduction.
How is Sandoff disease passed on in families?
an autosomal recessive disorder, meaning that having an affected offspring requires both unaffected parents to be carriers. Parents who carry the disorder will have a 25% risk of having an affected offspring in subsequent pregnancies.
What does Mendel's hypothesis of inheritance state?
i dont know all about it but he says that the mother and the father both pass genes to their offspring even though they may not show for example their fathers blue eyes but they show their mothers green eyes. the blue eyes is a recessive gene they will pass to their offspring. so it may skipa generation and come back because the offspring carry that gene. no gene is lost until it has passed 2 generations without a mother or father having it of the offspring have it.
Why did one of the characteristics for example dwarfness or white flower color disappear in the F1 generation of Mendal's crosses?
Since the F1 generation of crosses is a cross between two pure traits (for example, TT for tall and tt for short/dwarfness), the offspring of the pure parents all have the genotype of Tt: 100% of offspring will be tall. The dwarfness seems to "disappear" because the capital T is dominant, while the lowercase t (for shortness) is recessive. Dominant dominates a recessive trait, so only tallness appears and dwarfness seems to disappear. Additional Info: However, even though the dwarfness seems to "disappear" it is still in the genotype although it does not appear in the F1 generation. In the F2 generation, there will be a 25% chance of the offspring having the trait dwarfness, because the F1 generation is crossed (Tt x Tt).
Does hemochromatosis skip generation?
Hemochromatosis can skip generations because it is an autosomal recessive genetic disorder. This means that an individual can carry a gene for hemochromatosis without showing symptoms, and it may not be expressed in every generation. The risk of developing the condition depends on inheriting two copies of the mutated gene, one from each parent.
What crosses will result in dominant phenotype offspring?
Don't give us the options then!! If one parent had 2 dominant genes then all offspring would have dominant phenotype, the same goes for both parents having dominant genes.
When can a recessive gene assert itself?
When a parent for example has one dominant and onee recessive e.g Fe and another parent is a carrier for it e.g ee this will make the gene produce a trait of the offspring having a 50% chance of being a carrier
In humans straight toes S is dominant over curled toes s What would be the result of a cross between a recessive male and a heterozygous female?
The resulting offspring will have 50% chance of having straight toes and being heterozygous, and 50% chance of having curled toes and being recessive.
