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never [62]
3 years ago
10

In a genetic cross between aabbccddee and aabbccddee what fraction of the offspring will be homozygous dominant for all five gen

etic loci?
Biology
1 answer:
aniked [119]3 years ago
7 0

Answer:

None

Explanation:

The desired homozygous dominant genotype is AABBCCDDEE. To have an offspring with genotype "AABBCCDDEE", at least one copy of the dominant alleles for the genetic loci should be present in either of the parent. However, both the parents are homozygous recessive for all the five mentioned genetic loci and therefore, cannot have a progeny with homozygous dominant genotype "AABBCCDDEE". All the progeny of a cross between the two parents each with genotype "aabbccddee" would have homozygous recessive for all the give loci.

aabbccddee x  aabbccddee =  All aabbccddee

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3 years ago
The higher the proportion of loci that are "fixed" in a population, the lower are that population's
Zanzabum

The correct option is (D) Nucleotide variability and average heterozygosity

The higher the proportion of loci that are "fixed" in a population, the lower are that population's nucleotide variability and average heterozygosity.

<h3>What does it indicate when a gene in a population is fixed?</h3>
  • In population genetics, fixation is the transformation of a gene pool from one in which at least two alleles of a certain gene exist in a given population to one in which only one allele persists.
  • Any allele must eventually be lost entirely from the population or fixed (permanently established at 100% frequency in the population) in the absence of mutation or the heterozygote advantage.
  • Selection coefficients and random variations in allelic proportions determine whether a gene will ultimately be lost or fixed. Fixation may relate to a specific nucleotide location in the DNA chain or a gene in general (locus).

Learn more about the Nucleotide variability with the help of the given link:

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8 0
1 year ago
a lion and a leopard have almost the same characteristics in terms of feeding habitat and behavior . explain why a leopard and c
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A lion and a leopard  have almost  the  same characteristics  in terms  of feeding habitat and behavior. because the lion rules the wild. The lion is the forest's king, and he is feared by every animal that lives there. Additionally, lions hunt other large or small animals in packs.

Leopards and lions differ significantly in terms of their physical characteristics, size, and socialization. The majority of lion species have manes, and they are exceptionally huge quadrupedal cats that live in groups called prides. Leopards lack manes, are more solitary than lions, have spotted fur, and are smaller than lions.

The hybrid offspring of a male leopard and a female lion is known as a leopon. The animal resembles lions in the head, whereas leopards are more likened to in the rest of the body. These hybrids are created in facilities; they are not expected to appear naturally. The Leopard's greatest foe is undoubtedly the Lion, with whom it will engage in a fight to the death. Leopards, especially the young cubs, have been known to be attacked and killed by baboons and hyenas.

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11 months ago
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The correct answer is Option (B) Habituation.

Crocodiles ignore the birds which clean their teeth instead of eating them. This is an example of habituation.

<h3>Why do crocodiles show habituation toward the birds which clean their teeth?</h3>

It's an evolutionary phenomenon that when a bird used to sit in a crocodile’s mouth, the crocodile didn't eat it, instead, the crocodile used to allow the bird to sit in the mouth and clean the teeth of the crocodile so that they can alive longer, whereas the birds could get the free food from the crocodile’s mouth. It is an example of the symbiotic relationship between the two.

So, the same is the case today, crocodiles are habituated to the fact that the birds will clean their teeth so instead of eating them, these birds are being ignored by the crocodiles.

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