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Q: What fraction of the offspring resulting from a heterozygous by heterozygous dihybrid cross are homozygous recessive for both traits?
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The offspring of two parents that are heterozygous for a given trait have a percent chance of being homozygous for that trait?

There is a 25% chance (1 in 4) that the offspring will be homozygous for the trait. This is because when both parents are heterozygous (Aa), they can pass on either the dominant allele (A) or the recessive allele (a) to their offspring, resulting in a 1 in 4 chance of the offspring receiving the recessive allele from both parents and becoming homozygous (aa) for that trait.


What crosses will only produce heterozygous offspring?

A cross between two individuals that are homozygous for different alleles will only produce heterozygous offspring. This is because each parent can only donate one type of allele, resulting in all offspring being heterozygous for that particular gene.


What is the result of a cross between an individual who is homozygous dominant and another who is homozygous recessive for a trait?

The offspring will all be heterozygous for the trait, carrying one dominant and one recessive allele. This is known as a monohybrid cross, resulting in all offspring displaying the dominant trait phenotypically but carrying the recessive allele genotypically.


The probability of a homozygous recessive offspring resulting from a cross between two homozygous dominant individual is?

The probability of a homozygous recessive offspring resulting from a cross between two homozygous dominant individuals is 0%. This is because both parents can only pass on dominant alleles, so there is no possibility of a recessive allele being passed to the offspring.


A parent that is homozygous for a dominant trait is crossed with a parent that is homozygous for the recessive trait What percentage of the offspring will display the dominant trait?

100% of the offspring will display the dominant trait because the homozygous dominant parent can only pass on the dominant allele. The offspring will inherit one dominant allele from the dominant parent and one recessive allele from the recessive parent, resulting in a heterozygous genotype expressing the dominant trait.


Does inbreeding result in offspring that are heterozygous for most traits?

No, inbreeding increases the likelihood of offspring being homozygous for many traits, rather than heterozygous. This can lead to an increased expression of deleterious recessive genes, potentially resulting in health issues or genetic disorders.


Two plants are crossed resulting in offspring with a 3 to1 ratio for a particular trait This suggests?

The 3:1 ratio for a particular trait suggests that the trait is determined by a single gene with two alleles. It indicates that one parent is homozygous dominant for the trait, one parent is homozygous recessive, and the offspring are heterozygous.


Which type of cross would produce 100 percent heterozygous offspring?

A monohybrid cross between two heterozygous parents (Aa x Aa) would produce 100% heterozygous offspring. Each parent contributes one allele for the trait, resulting in all offspring being heterozygous.


What will be the ratio produced if Tt is crossed with tt?

The ratio produced would be 1:1 for heterozygous (Tt) offspring to homozygous recessive (tt) offspring. This is because the parent with genotype Tt will pass on one dominant allele (T) and one recessive allele (t) to its offspring, resulting in a 50% chance of either genotype in the offspring.


What is the genotype of a child if the mother is homozygous for the dominant trait and the father is homozygous for the recessive trait?

The child will inherit one allele from each parent. Since the mother is homozygous dominant (AA) and the father is homozygous recessive (aa), the child will inherit one dominant allele from the mother and one recessive allele from the father, resulting in a heterozygous genotype (Aa).


What is the ONLY genotype that can produce a recessive phenotype?

The only genotype that can produce a recessive phenotype is homozygous for the recessive allele (aa). This means that both copies of the gene are the recessive allele, resulting in the expression of the recessive trait.


Define Dominant Recessive Homozygous Heterozygous Purebreed and Hybrid?

-Dominant: An allele that is expressed when present in either a homozygous or heterozygous state. -Recessive: An allele that is only expressed when present in a homozygous state. -Homozygous: Having two identical alleles for a particular gene. -Heterozygous: Having two different alleles for a particular gene. -Purebred: An organism that has only one breed in its ancestry. -Hybrid: Offspring resulting from the breeding of two genetically different individuals or breeds.