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Recessive alleles can be passed on, even if they are not a visible feature. Let us say that the mother of a child has brown eyes (B), she also has the recessive gene of blue eyes (b). The father of the child has brown eyes, and also has the recessive gene of blue eyes. Mom: Bb Dad: Bb All possible combinations: BB, Bb, Bb, bb (blue eyes) The child then has a one in four chance of getting the recessive allel of blue eyes (statistically)
What else can I help you with?
Is it true that recessive alleles are never present when dominant alleles are present?
No, recessive alleles can still be present in an individual's genetic makeup even when dominant alleles are present. In this case, the recessive allele may not be expressed phenotypically, but can still be passed on to offspring.
In Mendel's experiment why did wrinkled seeds show up in the F2 generation even though they were not present in the F1 generation?
Wrinkled seeds are recessive The F1generation carried recessive alleles.
How does pseudodominant inheritance manifest in genetic traits within a family?
Pseudodominant inheritance occurs when a recessive trait appears to be dominant in a family due to both parents carrying the recessive gene. This can lead to the trait being passed down to offspring, even though it is recessive.
Why do we call some alleles dominant?
because it dominates the phenotype
What describes the man's trait and the alleles in his sperm cells if he inherited the dominant allele from his mother and recessive allele from his father?
As long as you aren't talking about a trait or gene that behaves co-dominately or some other exception, the man would have the dominant trait show up and his alleles would be dominant and recessive (or Dd if you are using letter symbols for the alleles- upper case being the dominant allele from the mom's egg and lower case for the recessive allele from the dad's sperm). So for example if we are talking about the gene for earlobes we can use the letter E to represent the two alleles or genetic variations: E for un-attached earlobes and e for attached earlobes. A sex cell (sperm or egg) has one allele each so that when they unite to make an embryo the new person has 2 alleles- one from each parent. So if the man inherited a dominant allele E from his mom and a recessive allele e from his father then he would have Ee as his "genotype"(what alleles he has). His "phenotype" is what trait he shows, which would be what ever is dominant-- in this case E equals un-attached earlobes.
Is it true that recessive alleles are never present when dominant alleles are present?
No, recessive alleles can still be present in an individual's genetic makeup even when dominant alleles are present. In this case, the recessive allele may not be expressed phenotypically, but can still be passed on to offspring.
In Mendel's experiment why did wrinkled seeds show up in the F2 generation even though they were not present in the F1 generation?
Wrinkled seeds are recessive The F1generation carried recessive alleles.
In mendal's experiments why did wrinkled seeds show up F2 generation even though they were not presentin the F1generation?
(Apex Learning) The F1 generation carried recessive alleles.
How did mendel find out whether the recessive allele were still present in the f1 plants?
he breeded the f1 plants with a recessive homozygous plant and if the offspring (f2) showed the recessive allele, then the recessive allele is still present in the f1 plant
In Mendels Experiment Why Did Wrinkles Seeds Show Up In The F2 Generation Even Though They Were Not Present In The F1 Generation?
(Apex Learning) The F1 generation carried recessive alleles.
In Mendel's experiment why did wrinkled seeds show up in the f2 generation even though they were not present in the f1 generation.?
(Apex Learning) The F1 generation carried recessive alleles.
In Mendel's experiment, why did wrinkled seeds show up in the F2 generation, even though they were not present in the F1 generation?
(Apex Learning) The F1 generation carried recessive alleles.
How does pseudodominant inheritance manifest in genetic traits within a family?
Pseudodominant inheritance occurs when a recessive trait appears to be dominant in a family due to both parents carrying the recessive gene. This can lead to the trait being passed down to offspring, even though it is recessive.
What are the circumstances under which dominant alleles will be expressed?
Dominant alleles are expressed when an individual has at least one copy of the dominant allele in their genotype. This means that even if there is a recessive allele present, the dominant allele will be the one observed in the phenotype. Dominant alleles mask the expression of recessive alleles when they are both present in an individual's genetic makeup.
Are dominant alleles naturally better for an organism?
No, recessive alleles are equally likely to be inherited (if your dealing with only those two types of alleles). BUT, dominant alleles are the ones that show up. That is precisely why they are called dominant. Compared to recessive alleles, dominant ones will overrule the others, making it the one inherited.
A gene that may not show up even though it is there is said to be what?
Recessive.
A gene that may not show up even though it is there is said to be?
recessive
