Ch 10 Test Flashcards
T or f
Mendel discovered predictable patterns in the inheritance of traits.
True
T or f
Genetics is the branch of biology that involves the study of how different traits are transmitted from one generation to the next.
True
T or f
The scientific study of heredity is called genetics.
True
In mendel’s experiments with the flower color of pea plants, only the parental generation produced white flowers.
False, in mendel’s experiments with the flower color of pea plants, only the -F1- generation produced white flowers
T or f
Mende, concluded that the patterns of inheritance are determined entirely by the environment.
F, Mendel concluded that the patterns of inheritance are determine entirely by the -parents-
T or f
The law of independent assortment was proposed by Mendel to explain his observations of inheritance patterns
True
T or f
Genes on chromosomes are the units of inheritance.
True
T or f
The allele for a recessive trait is usually represented by a capital letter.
False, the allele for a recessive trait is usually represented by a lowercase letter
T or f
Heterozygous individuals have two of the same alleles for a particular gene.
False. Heterozygous individuals have two -different- alleles for a particular gene
T or f
The dominant allele for tallness in pea plants is represented by the letter t
False, the dominant allele for tallness in pea plants is represented by the letter -T-
T or f
All genes have only two alleles.
False
T or f
A dihybrid cross involved two pairs of contrasting traits
True
T or f
Crosses involving a study of one gene are called monohybrud crosses
True
A reproduced process in which fertilization occurs within a single plant is
Pollination
Mendel produced strains of pea plants through the process of
Self-pollination
_________ refers to the transmission of traits from parent to offspring in sexually reproducing organisms
Heredity
In heterozygous individuals, only the ______ allele achieves expression.
Dominant
A trait that is not expressed in the F1 generation resulting from the cross breeding of two genetically different, true-breeding organisms is called
Recessive
The principle that states that one factor may mask the effect of another factor is the principle of
Dominance
In mendel’s experiments, a trait that disappeared in the f1 generation but reappeared in the f2 generation was always a
Recessive trait
The cellular process that results in the segregation of mendel’s factors is
Meiosis
Mendel formulated two principles know as the laws of
Segregation and independent assortment (heredity)
An organism that has two identical alleles for a trait is called
Homozygous
An organisms’s ________ refers to the set of alleles it has inherited
Genotype
The likelihood that a specific event will occur is called
Probability
Heterozygous vs homozygous
Heterozygous- different
Homozygous- same
Number of cells produced
Mitosis:
Meiosis:
Mitosis: 2
Meiosis: 4
Daughter cells identical to parents?
Mitosis:
Meiosis:
Mitosis: identical
Meiosis: not identical
Number of phases in each round of cell division
Mitosis:
Meiosis:
Mitosis: 4
Meiosis: 4
Can crossing over occur?
Mitosis:
Meiosis:
Mitosis: no
Meiosis: yes
Do chromosome pairs line up?
Mitosis:
Meiosis:
Mitosis: no
Meiosis: yes (metaphase 1)
Do chromosomes line up at the metaphase plate (equator) of the cell? Mitosis:
Meiosis:
Mitosis: yes
Meiosis: yes
