Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 12, Problem 11RQ
A recessive trait will be observed in individuals that are for that trait.
- heterozygous
- homozygous or heterozygous
- homozygous
- diploid
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A recessive trait will be observed in individuals that are for that trait?
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If an individual does not have a widow's peak, which genotypes are possible for their offspring?
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If an individual has no widow's peak, but both parents have widow's peaks, which genotypes are possible for the parents?
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Chapter 12 Solutions
Biology 2e
Ch. 12 - Figure 12.5 In pea plants, round peas (R) are...Ch. 12 - Figure 12.6 What are the genotypes of the...Ch. 12 - Figure 12.12 What ratio of offspring would result...Ch. 12 - Figure 12.16 In pea plants, purple flowers (P) are...Ch. 12 - Mendel performed hybridizations by transferring...Ch. 12 - Which is one of the seven characteristics that...Ch. 12 - Imagine you are performing a cross involving seed...Ch. 12 - Consider a cross to investigate the pea pod...Ch. 12 - A scientist pollinates a true-breeding pea plant...Ch. 12 - The observable traits expressed by an organism are...
Ch. 12 - A recessive trait will be observed in individuals...Ch. 12 - If black and white true-breeding mice are mated...Ch. 12 - The ABO blood groups in humans are expressed as...Ch. 12 - In a mating between two individuals that are...Ch. 12 - If the allele encoding polydactyly (six fingers)...Ch. 12 - A farmer raises black and white chickens. To his...Ch. 12 - Assuming no gene linkage, in a dihybrid cross of...Ch. 12 - The forked line and probability methods make use...Ch. 12 - How many different offspring genotypes are...Ch. 12 - Labrador retriever's fur color is controlled by...Ch. 12 - Which of the following situations does not follow...Ch. 12 - Describe one of the reasons why the garden pea was...Ch. 12 - How would you perform a reciprocal cross for the...Ch. 12 - Mendel performs a cross using a true-breeding pea...Ch. 12 - Calculate the probability of selecting a heart or...Ch. 12 - The gene for flower position in pea plants exists...Ch. 12 - Use a Punnett square to predict the offspring in a...Ch. 12 - Can a human male be a carrier of red-green color...Ch. 12 - Why is it more efficient to perform a test cross...Ch. 12 - Use the probability method to calculate the...Ch. 12 - Explain epistatis in terms of its Greek-language...Ch. 12 - In Section 12.3, ''Laws of Inheritance," an...Ch. 12 - People with trisomy 21 develop Down’s syndrome....Ch. 12 - A heterozygous pea plant produces violet flowers...
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- If an individual has a widow's peak, which genotypes are possible? Homozygous recessive Unable to determine Homozygous dominant Heterozygousarrow_forwardIf an individual has a widow's peak, but one of their parents does not, which genotypes are possible? Heterozygous Homozygous dominant Homozygous recessive Unable to determinearrow_forwardThe only way to have blue eyes is: Group of answer choices to be homozygous recessive for blue eyes to be a heterozygote with a blue allele to be homozygous dominant for eye colorarrow_forward
- If an individual is bald, so you can't tell whether or not they have a widow's peak, but neither parent has a widow's peak, which genotypes are possible? Unable to determine Heterozygous Homozygous recessive Homozygous dominantarrow_forwardPlease define the following terms: Gene Allele Dominant Recessive Homozygous Heterozygousarrow_forwardAlbinism is an autosomal (not sex-linked) recessive trait. A man and woman are both of normal pigmentation and have one child out of three who is albino (without melanin pigmentation). What are the genotypes of the albino's parents? One parent must be homozygous for the recessive allele; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. Both parents must be homozygous dominant. One parent must be heterozygous; the other parent can be homozygous dominant, homozygous recessive, or heterozygous. Both parents must be heterozygous. One parent must be homozygous dominant; the other parent must be heterozygous. O000arrow_forward
- Autosomal dominant traits cannot skip generations within a family tree. True or False.arrow_forwardMatch the word or phrase to a correct statement about it. recessive allele [Choose ] [Choose a cross between 4 parents an individual with 1 dominant allele and 1 recessive allele an individual with 2 recessive alleles a phenotype made of 2 dominant alleles only expressed in the phenotype if it's the only kind of allele present a letter written in uppercase dominant allele homozygous dominant a genotype made of 2 dominant alleles a cross looking at 2 separate genes dihybrid Choose | carrier an individual with 2 recessive 99+arrow_forwardConsidering a common autosomal recessive trait: (Read each statement carefully. Select all of the statements below that are true (that you agree with). Leave any statements that are false (that you do not agree with) un- selected.) the unaffected biological siblings of an affected person should be heterozygotes. an unaffected woman and an affected man have at most a 100% probability of having a affected child. an affected person should have an affected parent. The unaffected offspring of an affected parent must be carriers.arrow_forward
- The phenotypes of individuals that are homozygous dominant and heterozygous for a gene with two alleles, one dominant and one recessive, will be the same. True Falsearrow_forwardPeople with recessive disorders are usually born to normal parents who are both heterozygotes which means that both parents are carriers of the dominant allele for the disorder but appear normal themselves. Select one: True Falsearrow_forwardAttached earlobes is recessive while “Free” earlobes is dominant. Determine the phenotypes for both you and your partner. What genotypic and phenotypic ratios would you expect in your offspring?arrow_forward
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