Chapter 14 Study Module- Bio

Flashcards by paulinemansour, updated more than 1 year ago
Created by paulinemansour over 6 years ago


Freshman in College BIO 120 Flashcards on Chapter 14 Study Module- Bio, created by paulinemansour on 11/21/2014.

Resource summary

Question Answer
Mendel’s law of segregation states that __________. The two alleles from a heritable character segregate during gamete formation and end up in different gametes
A man who can roll his tongue and a woman who cannot roll her tongue have a son who can roll his tongue (R = can roll tongue; r = can't roll tongue). The son is curious about whether his father is homozygous or heterozygous for the tongue-rolling trait. Which of the following facts would allow him to know? find
Mendel studied __________, heritable features that vary among individuals; each variant is called a __________. character; trait
Human ABO groups are best described as an example of __________. find
In people with sickle-cell disease, red blood cells break down, clump, and clog the blood vessels. The blood vessels and the broken cells accumulate in the spleen. Among other things this leads to physical weakness, heart failure, joint pain, and brain damage. Such a suite of symptoms can be explained by __________. the pleiotropic effects of the sickle-cell allele
Achondroplasia, a type of dwarfism, and Huntington’s disease are examples of __________, with the exception that the Huntington’s allele is __________. dominant inherited disorders; lethal
In Labrador retrievers, a dog that has the genotype BBee, where BB produces black-pigmented fur and ee produces yellow-pigmented fur, would have __________ fur and would exhibit __________. yellow; epistasis
Which choice below is a basic difference between Mendel's particulate hypothesis and the hypothesis of blending inheritance? The blending inheritance hypothesis, but not the particulate hypothesis, maintained that after a mating, the genetic material provided by each of the two parents is mixed in the offspring, losing its individual identity.
In a typical pea experiment, two true-breeding plants with distinct traits of a single character are called the __________, and the offspring are called the __________, which will always be __________. P (parental generation); F1; hybrid
Fetal cells may be removed along with fluid from the womb by a process known as __________. amniocentesis
A red bull is crossed with a white cow and all of the offspring are roan, an intermediate color that is caused by the presence of both red and white hairs. This is an example of genes that are __________. find
In incomplete dominance, the offspring __________. will have an appearence thats intermediate between those of the two parental types
If a plant variety is true-breeding for a dominant trait, then __________. find
In humans, height and skin color have continuous variation in the population because of __________. find
An alternative version of a gene is called a(n) __________. find
__________ occurs when a single gene affects the phenotype of many characters in an individual. find
If the two traits that Mendel looked at in his dihybrid cross of smooth yellow peas with wrinkled green peas had been controlled by genes that were located near each other on the same chromosome, then the F2 generation __________. would have deviated from the 9:3:3:1 phenotypic ratio that is predicted by the law of independent assortment
Human blood groups are governed by three alleles, A, B, and O. A and B are codominant and O is recessive to both. A man who has type B blood and a woman who has type A blood could have children of which of the following phenotypes? A,B,AB, or O
Color in squash is controlled by epistatic interactions in which color is recessive to no color. At the first locus white squash (W) is dominant to colored squash (w). At the second locus yellow (Y) is dominant to green (y). What is the phenotype of a squash with the genotype wwYy? fund
If a heterozygous plant is allowed to self-pollinate, what proportion of the offspring will also be heterozygous? 1/2
The effect of the environment on a phenotype is referred to as __________. multifactorial
The term “true-breeding plants” means __________. find
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