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If you mate a Hereford bull with horns to a female without horns if the female is homozygous for the no horns how many calves could be born without horns Why?
This is not a matter of how many it's a matter of chance in terms of percentages. In this example, any bull that is horned is ONLY homozygous, both phenotypically AND genotypically, for horned because the horned gene in cattle is recessive. The polled (non-horned) characteristic in cattle is a dominant trait both phenotypically and genotypically. So that means that any horned parent that breeds a homozygous polled parent will have offspring that are ALL polled. The only way you will get horned offspring is one of two ways: a horned sire mates with a horned dam, or, a hetero polled sire mates with a hetero polled dam (resulting in a much smaller chance than the first way). The question above is answered as followed:Homozygous Horned (Hereford) bull x Homozygous Polled female = 100% Polled offspring.I cannot use the Punnett square on this site, but if you use it on a piece of paper you will see that 100% of all offspring are polled. But notice that genotypically they are HETEROZYGOUSLY polled. This means they are polled physically, but in their genes their offspring have a 50% chance, should this offspring be bred to a horned partner, of having either horned offspring or polled offspring. If the offspring of the above cross were bred to a polled partner, the results would be 50% hetero polled and 50% homozygously polled. AND, if the above offspring were bred also to a hetero polled partner, you would get, phenotypically, 75% polled and 25% horned. Genotypically, this is 25% homozygously polled, 50% hetero polled, and 25% homozygously horned.See, the most a cow can have in her lifetime is 20 calves. There is no way that she can have 100 or so calves in her lifetime to see this example work out. Producers have to go by chances of an event happening when selectively breeding cattle, not how many.
Will a longhorn bull put horns on an angus?
No. Horns are recessive-dominant, thus only appear if both parents are heterozygous polled (appear polled but have the horn gene), one is horned and the other hetero polled, or both are horned. Angus are homozygous polled, which means the first generation of offspring from a cross such as this will give you calves that are polled. They will, however, have the horn gene which means that if they are bred to a horned bull or cow, there's a much greater chance that their offspring will be horned.
Is a Bradford bull a cross breed or a Bos Tarus?
The Braford breed is a result of crossbreeding Brahman with Hereford. The breed has been created in such a way that resulting offspring of this F1 cross no longer have hybrid vigour (or less so than the initial Brahman-Hereford cross), and thus create cattle that can be registered as purebred Braford cattle.
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.
If a hornless bull mates with a horned cow what are the two genotypes of the two parents?
Hornless = polled. Polled cows and bulls can be either homozygous polled or heterozygous polled. So, since we have no idea of what kind of calf they produce, the genotypical cross will look like this: (H = polled and h= horned) H_ x hh "H_" symbolizes the unknown allele that the polled bull has. Is he hetero polled or homozygous polled? The "hh" of the cow symbolizes she is homozygous horned, since the horned trait in cattle is a recessive trait: polled gene is dominant.
If you mate a Hereford bull with horns to a female without horns if the female is homozygous for the no horns how many calves could be born without horns Why?
This is not a matter of how many it's a matter of chance in terms of percentages. In this example, any bull that is horned is ONLY homozygous, both phenotypically AND genotypically, for horned because the horned gene in cattle is recessive. The polled (non-horned) characteristic in cattle is a dominant trait both phenotypically and genotypically. So that means that any horned parent that breeds a homozygous polled parent will have offspring that are ALL polled. The only way you will get horned offspring is one of two ways: a horned sire mates with a horned dam, or, a hetero polled sire mates with a hetero polled dam (resulting in a much smaller chance than the first way). The question above is answered as followed:Homozygous Horned (Hereford) bull x Homozygous Polled female = 100% Polled offspring.I cannot use the Punnett square on this site, but if you use it on a piece of paper you will see that 100% of all offspring are polled. But notice that genotypically they are HETEROZYGOUSLY polled. This means they are polled physically, but in their genes their offspring have a 50% chance, should this offspring be bred to a horned partner, of having either horned offspring or polled offspring. If the offspring of the above cross were bred to a polled partner, the results would be 50% hetero polled and 50% homozygously polled. AND, if the above offspring were bred also to a hetero polled partner, you would get, phenotypically, 75% polled and 25% horned. Genotypically, this is 25% homozygously polled, 50% hetero polled, and 25% homozygously horned.See, the most a cow can have in her lifetime is 20 calves. There is no way that she can have 100 or so calves in her lifetime to see this example work out. Producers have to go by chances of an event happening when selectively breeding cattle, not how many.
Will a longhorn bull put horns on an angus?
No. Horns are recessive-dominant, thus only appear if both parents are heterozygous polled (appear polled but have the horn gene), one is horned and the other hetero polled, or both are horned. Angus are homozygous polled, which means the first generation of offspring from a cross such as this will give you calves that are polled. They will, however, have the horn gene which means that if they are bred to a horned bull or cow, there's a much greater chance that their offspring will be horned.
What is the crossing of plants and animals to produce specific traits in the offspring?
It is called cross-breeding, selective breeding or hybridization.
Is a Bradford bull a cross breed or a Bos Tarus?
The Braford breed is a result of crossbreeding Brahman with Hereford. The breed has been created in such a way that resulting offspring of this F1 cross no longer have hybrid vigour (or less so than the initial Brahman-Hereford cross), and thus create cattle that can be registered as purebred Braford cattle.
Which cross would produce the least phenotypic variation?
There are two choices that produce the least phenotypic variation. AA times aa produces only Aa offspring. AA times Aa produces and AA and Aa offspring.
Is bremer and angus a good cross?
Bremer and Angus cattle can make a good cross due to their complementary traits. Bremer cattle are known for their robustness and adaptability, while Angus cattle are prized for their meat quality and marbling. This cross can result in offspring that possess good growth rates, fertility, and meat characteristics, making them appealing for commercial beef production. However, the success of this cross may also depend on specific breeding goals and environmental conditions.
Which type of cross would produce 100 percent heterozygous offspring?
A cross between two homozygous parents will form a 100 percent chance of a heterozygous offspring. One homozygous parent must have the dominant allele, and the other must have the recessive allele. So, if the circumstances are correct, these characteristics will make for a 100 percent chance of a heterozygous offspring.
What effect do the factors inherited by the first offspring of a cross have on other offspring of that cross?
It is important to remember that the factors inherited by the first offspring of a cross have no effect at all on other offspring of that cross. For example, there is a 25% probability that offspring of a cross betweet two hybrid bean plants will inherit the factos RR. If one offspring inherits RR, there is still a 25% probability that the next offspring will also inherit RR.
What is the probability that a cross between a hybrid pea plant with round seeds and one with wrinkled seeds will produce offspring with wrinkled seeds?
The probability that an offspring will have wrinkled seeds is 2 in 4 or 50%
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 are white faced cattle called?
The question itself is very ambiguous, since white-faced cattle are mainly identified not by coat colouration, but by breed due to colouration. In general, though, white-faced cattle can be called white-faced or baldy. The breeds and cross-breeds that have white-faces or are distinguished by a white face are as follows:Baldies, for cross-bred commercial cattle comprised of mainly Hereford-cross cattle or Simmental-cross cattle where the white face is a dominant trait--called either Red White Face (RWF) or Black White Face (BWF) Cattle can also be Grey White Face or Yellow White FaceHerefords (polled and horned) for purebred and straight-bred Hereford cattle;Black Herefords, completely separate from the Hereford breed.SimmentalsSimmental-FleckviehMontbeliard cattle (also known as French Dairy Simmental), which are considered a part of the Simmental breed;Groningen White-headedSimbrahBrafordBeefmakerHays ConverterBelmont AdapteurSimAngusHintewald
What offspring are possible from a cross between a gg plant and a gg plant?
A cross between two gg plants, both homozygous recessive, will only produce offspring that are also gg. Since both parents contribute the same recessive allele (g), all the resulting offspring will be gg as well, resulting in 100% of the offspring exhibiting the same traits associated with the recessive genotype.
