Maternal inheritance of mitochondrial mutant phenotype poky (a) Poky 우 (b) Normal 9 (ad-) (ad-) - Normal, ad- Poky, ad- 20 20 Normal Poky, ad Poky Normal, ad (ad-) (ad-) FIGURE 3-20 Reciprocal crosses of poky and wild-type Neurospora produce different results because a different parent contributes the cytoplasm. The female parent contributes most of the cytoplasm of the progeny cells. Brown shading represents cytoplasm with mitochondria containing the poky mutation, and green shading represents cytoplasm with wild-type mitochondria. Note that all the progeny in part a are poky, whereas all the progeny in part b are normal. Hence, both crosses show maternal inheritance. The nuclear gene with the alleles ad+ (black) and ad- (red) is used to illustrate the segregation of the nuclear genes in the 1:1 Mendelian ratio expected for this haploid organism. 00000000 00000000
Maternal inheritance of mitochondrial mutant phenotype poky (a) Poky 우 (b) Normal 9 (ad-) (ad-) - Normal, ad- Poky, ad- 20 20 Normal Poky, ad Poky Normal, ad (ad-) (ad-) FIGURE 3-20 Reciprocal crosses of poky and wild-type Neurospora produce different results because a different parent contributes the cytoplasm. The female parent contributes most of the cytoplasm of the progeny cells. Brown shading represents cytoplasm with mitochondria containing the poky mutation, and green shading represents cytoplasm with wild-type mitochondria. Note that all the progeny in part a are poky, whereas all the progeny in part b are normal. Hence, both crosses show maternal inheritance. The nuclear gene with the alleles ad+ (black) and ad- (red) is used to illustrate the segregation of the nuclear genes in the 1:1 Mendelian ratio expected for this haploid organism. 00000000 00000000
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Gene Interactions
When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.
Gene Expression
Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.
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Question
In Figure 3-20, what color is used to denote cytoplasm
containing wild-type mitochondria?
Transcribed Image Text:Maternal inheritance of mitochondrial mutant phenotype poky
(a) Poky 우
(b) Normal 9
(ad-)
(ad-)
- Normal, ad-
Poky, ad-
20
20
Normal
Poky, ad
Poky
Normal, ad
(ad-)
(ad-)
FIGURE 3-20 Reciprocal crosses of poky and wild-type Neurospora produce different results because a
different parent contributes the cytoplasm. The female parent contributes most of the cytoplasm of the progeny
cells. Brown shading represents cytoplasm with mitochondria containing the poky mutation, and green shading
represents cytoplasm with wild-type mitochondria. Note that all the progeny in part a are poky, whereas all the
progeny in part b are normal. Hence, both crosses show maternal inheritance. The nuclear gene with the alleles
ad+ (black) and ad- (red) is used to illustrate the segregation of the nuclear genes in the 1:1 Mendelian ratio
expected for this haploid organism.
00000000
00000000
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