EBK BIOLOGY
5th Edition
ISBN: 9780133996807
Author: Maier
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Question
Chapter 7, Problem 3GP
Summary Introduction
To describe:
The relationship between the allele P and p.
Introduction:
The allele is the form of a single gene present in an organism. The different combination of the alleles determines the genotype and
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In zucchinis there are two genes controlling flower colour. One gene determines if
pigment is produced or not (P = pigment, p = no pigment) and another gene controls
the colour of the pigment (O = orange, o=yellow). Which of the following
genotypes will produce Orange flowers?
a) Pp Oo & PP OO
b) pp Oo & pp 00
O c) pp oo & Pp oo & PP oo
Two different genes control the expression of kernel
colour in Mexican black corn: black pigment gene B and
dotted pigment gene D. Gene B influences the
expression of gene D. The dotted phenotype appears
only when gene B is in the homozygous recessive state.
A colourless variation occurs when both genes are
homozygous recessive.
What would be the phenotypic ratio of a test cross with a
plant heterozygous for both traits? Your response must
include a Punnett square with appropriate nomenclature.
Show the ratio as whole numbers in their lowest form
and their corresponding phenotypes.
1) In the plant Salvia, two genes determine the inheritance of flower colour. For one gene, P is the allele for
purple colour and p for pink. However, at least one dominant allele at the other locus is required for the colour to
be expressed, Plants with the genotype aa have white flowers. Write down all possible genotypes for
a) purple flowered
b) pink flowered
c) white flowers
d) which gene, A/a or P/p is the epistatic gene and which is the hypostatic gene?
e) What type of epistasis is this?
Chapter 7 Solutions
EBK BIOLOGY
Ch. 7 - What is the relationship between genotype and...Ch. 7 - Prob. 2LTBCh. 7 - Prob. 3LTBCh. 7 - Prob. 4LTBCh. 7 - Prob. 5LTBCh. 7 - Scientists have recently developed a process by...Ch. 7 - What is the physical basis for the independent...Ch. 7 - Prob. 8LTBCh. 7 - Prob. 9LTBCh. 7 - Prob. 10LTB
Ch. 7 - Prob. 1GPCh. 7 - Prob. 2GPCh. 7 - Prob. 3GPCh. 7 - Prob. 4GPCh. 7 - Pfeiffer syndrome is a dominant genetic disease...Ch. 7 - Prob. 6GPCh. 7 - A cross between a pea plant that produces round...Ch. 7 - Prob. 8GPCh. 7 - The allele BRCA2 was identified in families with...Ch. 7 - Two parents both have brown eyes, but they have...Ch. 7 - Prob. 2AAATBCh. 7 - Prob. 3AAATBCh. 7 - Prob. 1CTSCh. 7 - Prob. 2CTSCh. 7 - Prob. 3CTS
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- In snapdragons red flower colour (CR) is incompletely dominant to white flower colour (CW). The heterozygote has pink flowers. Normal broad leaves (LB) are incompletely dominant to narrow, grass-like leaves, (LN). The heterozygote has intermediate leaf width. If a red-flowered, narrow leaved snapdragon is crossed with a white-flowered broad leaved one, what will be the phenotypes in the F1 and F2 generations, and what will be the proportions of the different phenotypic classes? (You must draw a branch diagram to provide the answer for the F2)arrow_forwardIn snapdragons red flower colour (CR) is incompletely dominant to white flower colour (CW). The heterozygote has pink flowers. Normal broad leaves (LB) are incompletely dominant to narrow, grass-like leaves, (LN). The heterozygote has intermediate leaf width. If a red-flowered, narrow leaved snapdragon is crossed with a white-flowered broad leaved one, what will be the phenotypes in the F1 and F2 generations, and what will be the proportions of the different classes? (Draw a branch diagram to provide the answer)arrow_forwardgps14arrow_forward
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