orange (pigmented) beak with a finch homozygous for ivory (unpigmented) beak and get numerous offspring, all of which have a pale, ivory-orange beak. This pattern of color expression is most likely to be an example of:
a. incomplete dominance.
b. polygenic inheritance.
c. pleiotropy.
d. crossing over.
e. codominance.
Imagine that beak color in a finch species is controlled by a single gene. You mate a finch homozygous for?
incomplete dominance results in a new phenotypic expression not seen before in the offspring think red plus white give you pink flowers. in co-dominance both alleles are expressed simultaneously...think red and white flowers give you red and white striped flowers. with your discription of ivory crossed wtih orange giving you a pale ivory -orange bill it is hard to assertain from the description of the bird's beak whether this is a case of co-domiance or incomplete domiance. it is not crossing over, pleitropy(where one gene affects many physical traits) nor polygenic inheritance (where many genes affect one physical trait)
Reply:A incomplete dominance ( heterozygous individuals have an intermediate, or in-between, phenotype).
survey research
Tuesday, July 14, 2009
Which of the following was NOT a way in which Han Wudi strengthened his rule?
A. he created a royal university to train administators
B. he reinstated the practice of divided inheritance
C. he confiscated all gold and claimed ownership of natural resource
D.he required that sons of local chiefs be educated at the chinese Court.
Which of the following was NOT a way in which Han Wudi strengthened his rule?
http://en.wikipedia.org/wiki/Han_Wudi
B. he reinstated the practice of divided inheritance
C. he confiscated all gold and claimed ownership of natural resource
D.he required that sons of local chiefs be educated at the chinese Court.
Which of the following was NOT a way in which Han Wudi strengthened his rule?
http://en.wikipedia.org/wiki/Han_Wudi
What is the key to the recognition of incomplete dominance?
1. The heterozygote expresses the phenotype of both homozygotes.
2. The trait exhibits a continuous distribution.
3. The dominant allele is not always expressed.
4. The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
5. The alleles affect more than one trait.
An individual with the genotype AaBb produces four different gametes in equal proportions. This is a demonstration of ______.
A. Mendel's principle of segregation
B. the chromosomal theory of inheritance
C. Mendel's principle of independent assortment
D. crossing over
E. linkage
What is the key to the recognition of incomplete dominance?
1. The heterozygote expresses the phenotype of both homozygotes.
A. Mendel's principle of segregation
Reply:Lobster is right!
People having blue eyed and green eyed parents have blue-green (cyan) eyes for instance.
Reply:questions seem oddly worded but 1 and A seem correct. Incomplete dominance is definitely showing traits from both alleles and this is different from codominance where the two alleles affect phentotype is seperate, distinguishable ways.
2. The trait exhibits a continuous distribution.
3. The dominant allele is not always expressed.
4. The phenotype of the heterozygote falls between the phenotypes of the homozygotes.
5. The alleles affect more than one trait.
An individual with the genotype AaBb produces four different gametes in equal proportions. This is a demonstration of ______.
A. Mendel's principle of segregation
B. the chromosomal theory of inheritance
C. Mendel's principle of independent assortment
D. crossing over
E. linkage
What is the key to the recognition of incomplete dominance?
1. The heterozygote expresses the phenotype of both homozygotes.
A. Mendel's principle of segregation
Reply:Lobster is right!
People having blue eyed and green eyed parents have blue-green (cyan) eyes for instance.
Reply:questions seem oddly worded but 1 and A seem correct. Incomplete dominance is definitely showing traits from both alleles and this is different from codominance where the two alleles affect phentotype is seperate, distinguishable ways.
Biology question again help?
A case of more than one gene influencing one phenotypic characteristic is called
a. pleiotropy.
b. polygenic inheritance.
c. X-linked.
d. monohybrid.
Biology question again help?
b. polygenic inheritance
Reply:B- polygenic inheritance (also called multifactoral)
Hope this helps-
Reply:Polygenic inheritance
pleiotropism means one gene controlling/influencing more than one character
Reply:A case of more than one gene influencing one phenotypic characteristic is called
b. polygenic inheritance.
Reply:b
a. pleiotropy.
b. polygenic inheritance.
c. X-linked.
d. monohybrid.
Biology question again help?
b. polygenic inheritance
Reply:B- polygenic inheritance (also called multifactoral)
Hope this helps-
Reply:Polygenic inheritance
pleiotropism means one gene controlling/influencing more than one character
Reply:A case of more than one gene influencing one phenotypic characteristic is called
b. polygenic inheritance.
Reply:b
The discovery of chromosomes provided a link between Mendel's principles and...?
a. pollination
b. inheritance
c. mitosis
d. meiosis
The discovery of chromosomes provided a link between Mendel's principles and...?
it's not a or d. meiosis is only involved in sex cell development. i think it's probably mitosis because during that process the chromosomes cross over and separate into new cells which would help explain how genes and traits are inherited, which mendel's work described.
Reply:d maybe?? i know it's not b because medel's princibles were inheritance
survey for money
b. inheritance
c. mitosis
d. meiosis
The discovery of chromosomes provided a link between Mendel's principles and...?
it's not a or d. meiosis is only involved in sex cell development. i think it's probably mitosis because during that process the chromosomes cross over and separate into new cells which would help explain how genes and traits are inherited, which mendel's work described.
Reply:d maybe?? i know it's not b because medel's princibles were inheritance
survey for money
What is it called when the presenence of 2 different alleles results in an intermediate phenotype?
A)incomplete dominance
B)polygenic inheritance
C)multiple alleles
D)sex-linked genes
What is it called when the presenence of 2 different alleles results in an intermediate phenotype?
The answer is A) incomplete dominance.
For example, suppose that you cross a red flower with a white flower (of the same plant type). Red is considered dominant, and the genotype would be "RR". White is considered recessive, and the genotype would be "rr". All offspring would have the genotype of "Rr" and would be pink (an intermediate phenotype).
Reply:We took it at school as "co-dominance" , maybe it's the same as incomplete dominance
Reply:A) incomplete dominance! I'm 100% positive!
B)polygenic inheritance
C)multiple alleles
D)sex-linked genes
What is it called when the presenence of 2 different alleles results in an intermediate phenotype?
The answer is A) incomplete dominance.
For example, suppose that you cross a red flower with a white flower (of the same plant type). Red is considered dominant, and the genotype would be "RR". White is considered recessive, and the genotype would be "rr". All offspring would have the genotype of "Rr" and would be pink (an intermediate phenotype).
Reply:We took it at school as "co-dominance" , maybe it's the same as incomplete dominance
Reply:A) incomplete dominance! I'm 100% positive!
Natural mutaions...?
natural mutations are the result of?
A. continuos variations
B. polygenic inheritance
C. spontaneous changes in DNA
D. reverse transciption in the nucleus.
Natural mutaions...?
C. spontaneous changes in DNA
mutations are changes in DNA sequences that can occur during cell division or due to carcinogens or mutagens
A. continuos variations
B. polygenic inheritance
C. spontaneous changes in DNA
D. reverse transciption in the nucleus.
Natural mutaions...?
C. spontaneous changes in DNA
mutations are changes in DNA sequences that can occur during cell division or due to carcinogens or mutagens
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