Genetics 1
The characteristics of an organism.
What are traits?
This gene always shows is self over a recessive gene
What is a dominant gene?
All human cells contain _________ chromosomes
What is 46?
Where are chromosomes located?
What is the nucleus?
a capital letter represents what type of trait?
What is a dominant trait?
What does DNA stand for?
Deoxyribonucleic Acid
This describes two of the same copies of a gene
What is homozygous?
The process by which DNA is duplicated
What is replication?
Homologous pairs switch DNA in Prophase I randomly?
What is Crossing Over?
Heterozygous parents are crossed. What percent of offspring will be homozygous dominant?
What is 25%?
Chromosomes are made up of _______.
What is DNA?
This describes different alleles for the same trait.
what is heterozygous?
During replication, DNA makes an ________ copy of itself.
What is identical?
Organized display of an organism's chromosomes.
What is karyotype?
What percent of the offspring of a cross of heterozygous parents will be homozygous?
What is 50%?
The four nitrogen bases found in DNA.
What are adenine, guanine, cytosine, and thymine?
A model that shows possible gene combinations.
What is a Punnett square?
One of two or more forms of a particular gene
What is an allele?
genes of a trait that is hidden when the dominant gene is present
What is a recessive gene?
What percent of the offspring of a cross of heterozygous parents will be heterozygous?
What is 50%?
The part of a chromosome that links sister chromatids.
What is Centromere?
The process in which the cytoplasm of a single cell is divided to form two daughter cells
What is Cytokinesis?
The reason for cell division in mitosis?
What is to grow, to replace damage cells and tissues and to reproduce DNA?
What percentage of two homozygous parents will be heterozygous?
What is zero percent?
What percent of the offspring of heterozygous parents will be homozygous recessive?
What is 25%
A type of cell division that results in four daughter cells.
What is Meiosis?
A cell that contains two sets of chromosomes (full set, 2N=46)
What is Diploid?
The changing of the structure of a gene.
What is a mutation?
A homozygous dominant spotted cow has Ss as its genotype. What is the genotype of an unspotted cow?
What is ss?
Gg and Gg genotypes are crossed, what are the genotypes of their F1 generation?
What is GG, Gg, gg?
The passing of traits from parent to offspring is called.
What is heredity?
Cylindrical structures in a cell that play a role in cell division.
What are centrioles?
Tumors that cannot spread by invasion or metastasis.
What is Benign?
A dominant white bunny has a baby with a recessive brown bunny. It has two brown bunny offsprings. What is the genotype of its parents? Use W and w.
What is Ww and ww?
A homozygous hairy brown rat (RR) is crossed with a heterozygous naked mole rat (rr), what is their F1 phenotype?
What is hairy brown rat phenotype?