Unit 4 Test
In pea plants the allele for purple flowers is dominant over the allele for white flowers l. Two heterozygous purple-flowered plants are crossed. What is the probability that the cross will produce a heterozygous purple-flowered offspring?
1/2
In pea plants the allele for purple flowers is dominant over the allele for white flowers l. Two heterozygous purple-flowered plants are crossed. What is the probability that the cross will produce a white-flowered offspring?
1/4
What is the probability that the cross between the following genotypes: Aa BB x Aa Bb will produce an offspring with the genotype aa BB?
1/8
If a somatic cell that normally has 40 chromosomes goes under mitosis and cytokinesis, how many cells with how many chromosomes each is produced?
2 cells 40 chromosomes
If a diploid cell with 100 chromosomes undergoes mitosis and cytokinesis, how many cells with how many chromosomes each?
2 cells 100 chromosomes
A non-human germ cell contains 80 chromosomes. Which describes the cell after Meiosis I and Cytokinesis?
2 haploid cells with bivalent chromosomes (consists of two chromosomes each.)
The sequence complementary to this strand: 5' GGG ATT AAA CTT '3
3' CCC TAA TTT GAA '5
A sea otters somatic cells normally have 38 chromosomes. How many chromosomes are present in each of the Sea otters somatic cell after mitosis and cytokinesis
38 chromosomes
A sea otters somatic cells normally have 38 chromosomes. How many pairs of sister chromatids do the sea otter's somatic cells have during metaphase?
38 pairs of chromatids
If a germ cell that normally has 40 chromosomes undergoes meiosis and cytokinesis, how many cells and chromosomes each is produced?
4 cells 20 chromosomes
If a diploid cell with 100 chromosomes undergoes meiosis and cytokinesis, how many cells and chromosomes each?
4 cells 50 chromosomes
A normal human cell contains 46 chromosomes, how many of these chromosomes are classified as autosomes?
44
Human chromosome
A linear molecule consisting of two strands running in opposite directions, with each chromosome containing hundreds of genes.
Single gene
A section of DNA which codes for a specific protein. The transcription and translation of a gene occur only at certain times during a cell's life.
Mitosis
DNA replication followed by one nuclear division and one round of cytokinesis
Meiosis
DNA replication followed by two nuclear divisions and two rounds of cytokinesis
In rabbits, albinism is recessive to normal brown coloration. When an albino female was crossed with a brown male, they produced two brown offspring and two albino offspring. What was the genotype of tge male parent?
Heterozygous
Which term identifies pairs of chromosomes which contain the same genes in the same order?
Homologous
A father with curly hair and a mother with straight hair produce children with wavy hair. One of these children eventually produced his own children with a curly haired partner. Half of the resulting children had curly hair and half had wavy hair. What is the best explanation for this pattern of inheritance?
Incomplete Dominance
Red-green color blindness is much more common in males than in females. The colorblind males in heritage the trait from an unaffected mother. Which of the following best describes the inheritance pattern of the trait?
X linked ressessive trait
Sex cells are called
gametes and germ cells
Body cells are called
somatic cells
