Question

Select from the terms below to answer the question below Each term is used once.

A) Codominance

B) Incomplete Dominance

C) Complete Dominance

D) Pleiotropy

E) Genetic Heterogeneity

F) Epistasis

G) Epigenesis

          

1. True breeding “long” radishes were crossed with true breeding “round” radishes.The offspring of this cross resulted in 100% “oval” radishes. This type of inheritance is most consistent with _________

Marfan syndrome is caused by an autosomal dominant gene that has multiple phenotypic effects such as lengthened long bone in limbs, lens dislocation, and increased risk of aortic aneurysm. What term do we use to describe a gene like this that affects multiple phenotypes? ______.

A woman is blood type O even though both her parents are blood type AB. This type of inheritance is caused by______

In peas, homozygous tall plants crossed with homozygous dwarf plants result in

            all tall plants in the F1 generation. This type of inheritance is referred to as_____.

The MN blood group system contains two alleles designated as LM and LN. There are three possible genotypes, resulting in three phenotypes. This example illustrates the type of inheritance known as _________.

In humans, there are several mutations that can cause hereditary deafness. Most of these mutations are recessive, yet two deaf people can marry and produce children with normal hearing. This is explained by the fact that deafness shows _________

The eye is an example of an organ that develops from a complex series of developmental events, controlled and influenced by many genes. This process illustrates the concept of ______.

Answer 1

1) This type of inheritance is most consistent with incomplete dominance- It is because incomplete dominace is the inheritance in which neither of the allele hinders the other allele characters.

2) A gene like this affects muytilpe phenotypes- Pleiotropy- It is because when one gene affect more than one more phenotypes character then it is called pleiotropy.

3) A woman is blood type O even though both her parents are blood type AB. This type of inheritance is caused by Genetic heterogeneity- It is due to the fact that in ABO blood group the genetic heterogeneity produces the allele O.

4) In peas, homozygous tall plants crossed with homozygous dwarf plants result in all tall plants in the F1 generation. This type of inheritance is referred to as complete dominance- This is because the complete dominance shows that hindrance of character of one allele and completely dominating the other character.

5) The MN blood group system contains two alleles designated as LM and LN. There are three possible genotypes, resulting in three phenotypes. This example illustrates the type of inheritance known as co dominance- It is due to the fact that MN blood type is controlled by two alleles which equally impact the offspring.

6) In humans, there are several mutations that can cause hereditary deafness. Most of these mutations are recessive, yet two deaf people can marry and produce children with normal hearing. This is explained by the fact that deafness shows epistasis- It is because epistasis is the phenomenon in which the gene mutation of a person is dependent in other genes mutation. Thus in this case heterozygous child can hear normally.

7) The eye is an example of an organ that develops from a complex series of developmental events, controlled and influenced by many genes. This process illustrates the concept of epigenesis- It is because epigenesis is the process of formation of organ, moreover It is the process in which cell differentiated to form a complete organ.

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