Answers
The law of independent assortment states that traits are passed from parents to offspring independent of one another.
The law of independent assortment, formulated by Gregor Mendel, is a fundamental principle in genetics that describes the inheritance pattern of different traits. According to this law, the segregation of one pair of alleles (genes) during gamete formation is independent of the segregation of another pair of alleles for different traits. In simpler terms, the inheritance of one trait does not influence the inheritance of another trait.
Mendel's experiments with pea plants revealed that the assortment of alleles for one trait (such as flower color) does not affect the assortment of alleles for another trait (such as seed shape). The law of independent assortment holds true under the condition that the genes governing these traits are located on different chromosomes or are far enough apart on the same chromosome to undergo genetic recombination.
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Answer:
The law of states that traits are passed from parents to offspring independently of one another. The Law of Independent Assortment, also known as "Inheritance Law", states that traits are passed from parents to offspring independently of one another.
Explanation:
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Deafness is an autosomal recessive disorder as the first generation is unaffected and the genotype of the fifth generation is AaBb.
What are pedigree and genotype?
Pedigree is a chart representation of the phenotype of specific genes of the organism and its inheritance from the ancestral family. The pedigree can be used for the analysis of the heritable disease and illness in the family root.
The deafness illness in the pedigree is recessive as the first generation of the pedigree remains unaffected but the later generation is affected and is diseased.
From the chart, deafness can be said to be an autosomalrecessive disorder as some generations are unaffected and in some the disease is present. More than one gene is controlling the disease as the fifth and sixth generations are affected but not their offspring.
The parent of the fifth generation are affected but their progenies are normal to know the genotype let's assume the genes A and B to be responsible for the disease and the mutation in any one of the alleles will result in deafness.
Hence, the genotype of the parents 5 and 6 in the fourth generation will be AAbb and aaBB as both of them diseased or deaf, the offsprings produced from their cross will be AaBb that is all the offspring of the fifth generation will be normal and unaffected.
Therefore, the genotype of the fifth generation in the pedigree is AaBb.
Learn more about pedigree and autosomal recessive disorder here:
Answer:
According to the pedigree, It is clear that the F1 generation is not affected but their offspring are affected in F2, which explains that the deafness presented with the pedigree is recessive. It should be an Autosomal recessive inheritance as it is found in both male and female offsprings.
As it is found that the parents are affected in 5th gen and 6th generation but their offspring are not affected which means there must be more than one genes controlled this disorder
B. In 5th generations mentioned above offspring is unaffected but parents are affected, to find the genotype of the individual let assume there are two genes responsible for it A and B, and mutation in any one of them can result in deafness.
So in IV generation Individuals 5 and 6 have genotypeAAbb and aaBB; both are deaf.
gametes:- Ab & aB.
So, the genotype of all offsprings will be AaBb means all are normal.
Answers
Oxigen - 21% -
Hope it helped!
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The answer is kwashiorkor. Kwashiorkor, also known as “edematous malnutrition” because of its relationship with edema is a nutritional disorder most often seen in regions experiencing famine. It is a form of malnutrition caused by an absence of protein in the diet.
a. vaporization
b. freezing
c. boiling
d. melting
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II. The clarity of objects
III. Retinal disparities
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Answer:
The answer is II
Explanation:
The clarity of objects. The clarity of objects will allow the individual to perceive depth.
unusually long bones and spinal curvature, as well as vision, cardiac, and respiratory
problems. The syndrome tends to become increasingly severe over time. The following
pedigree shows inheritance of Marfan syndrome in a multigenerational famil (5)y.
8. Wh
5
9. Tra
Th
the
III
Be
us
wi
a) How is this syndrome inherited (dominant, recessive or sex-linked)?
2
b) Can you determine individual 114's genotype? Explain.
b.
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c) Individual III and I12 are considering having another child. What is the probability that
this child will have Marfan syndrome? Explain using a Punnett square.
Answers
Answer:
The correct answers are :
a) syndrome Could be autosomal recessive or dominant
b) If it is autosomal recessive - no,
and if it is autosomal dominant - yes, (II-4) - Aa
c) probability of the another child :
Autosomal recessive: Aa x aa 50%
Autosomal dominant: aa x Aa 50%
Explanation:
a) Marfan syndrome could be inherited by the autosomal recessive or dominant pattern on the basis of following characters according the pedigree gives:
- transmitted by anyone regardless of sex male or female
- characters should not skip generations
- A cross between affected person and an normal person should produce approximately half of the affected offspring.
b) Assuming that autosomal dominant than there is two possibilities :
1) in case of I 2 genotype is heterozygous which means it is Aa which will produce Aa Aa aa and aa with crossing with aa as per pedigree however it is incorrect according the offspring given in II.
2) If I 2 is AA- then offspring will be Aa, Aa, Aa and Aa. which is correct according the pedigree.
thus, the answer is - Aa
c) the punnet square as per question is :
II2 - Aa × II1 - aa
A a
a Aa aa
a Aa aa
similar with autosomal recessive
thus, the correct answer is 2 out of 4 that is 50%