EBK BIOLOGY
5th Edition
ISBN: 9780100667976
Author: Maier
Publisher: YUZU
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Question
Chapter 8, Problem 2LTB
Summary Introduction
To detrmine:
The meaning of the sentence,' a gene has multiple allele'.
Whether a gene can have more than two allele for a single trait.
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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- What are two of the same alleles for a trait?arrow_forwardWhat is Mendel’s law of segregation? Allele pairs separate during the formation of gametes, and pair back up upon fertilisation. During meiosis, the alleles of two or more genes separate into the gametes independent of each other. During meiosis. genetic material segregates equally into the resulting gametes. The separation of alleles into different gametes results in genetically distinct offspring. During meiosis, genes that are in close proximity on the genome are more likely to cross over together.arrow_forwardWhy are some alleles dominant and some recessive?arrow_forward
- How do geneticists know whether a particular trait is caused by the alleles of one gene or by two genes interacting in one of a number of possible ways?arrow_forwardIn genetics, what does a genotype of Hh signify? Choose 1 answer: Choose 1 answer: (Choice A) A Homozygous; two dominant alleles (Choice B) B Homozygous; two recessive alleles (Choice C) C Heterozygous; one dominant allele and one recessive allele (Choice D) D Homozygous; one dominant allele and one recessive allelearrow_forwardWhat is a gene with more than 2 alleles?arrow_forward
- In humans, the alleles for unattached earlobes is dominant over the allele for attached earlobes. The allele for dark hair dominates the allele for light hair. If both parents are heterozygous for earlobe attachment and hair color, what types of offspring can they produce, and what is the probability for each type?arrow_forwardIn some breeds of chickens, there are alleles for black color and white color. Neither of these alleles is dominant over the other. When a chicken of one of these breeds has both of these alleles, its color is black-and-white spotted (which is also called erminette). If a spotted chicken is bred with a black chicken, the phenotypes of the offspring will occur in what ratio? (Hint: Construct a Punnett square to help you answer this question.) A 1:2:1 ratio of black, spotted, and white A 1:1 ratio of spotted and white A 1:1 ratio of black and spotted A 1:3 ratio of white and black In these breeds of chickens, the alleles for color are an example of codominance or imcomplete dominance? In one species of finch, there are alleles for yellow color and red color, but neither of these alleles is dominant over the other. When a finch of this species has both of these alleles, its color is orange. If an orange finch is bred with a yellow finch, the…arrow_forwardWhat is the phenomenon of a single gene determining a number of distinct and seemingly unrelated characteristics?arrow_forward
- Eye Color is a trait that involves a number of genes. To simplify our example, we can break down the traitinto two phenotypes: dark color and light color eyes. Dark coloration is considered dominant, or isexpressed in a heterozygous condition (when the alleles are different).Q: If you have one light eyed parent and one parent that is homozygous for dark eye color, what are thepotential eye colors of their offspring (young)? To start, what do the Parents’ alleles look like? What istheir Genotype? (Remember, you pick which letter you want to use)Light eye colored parent:Dark eye colored parent:One of the things Mendel designed was a way to provide information about how the genes are passed onfrom parent to offspring. He designed something called a Punnett Square. This square places the parents’alleles outside the box, then uses those alleles to fill in the squares.Let’s start with a reminder of what we know about the parents: Parent Phenotype(appearance) Genotype(alleles) 1 2arrow_forwardHow are the alleles of a gene different from each other? What is its importance?arrow_forwardWhich statement is false when considering alleles and genes? a) A given gene can have many different possible alleles. b) Alleles are alternative forms or variants of genes. c) Individuals can be homozygous or heterozygous, and this refers to which alleles they have for a particular gene. d) An allele is the same thing as a gene.arrow_forward
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