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WorksheetsDo Now Ch 7: Genetics and Biotechnology
Total questions: 20
Worksheet time: 25mins
What is the basic unit of heredity that carries genetic information from parents to offspring?
Chromosome
Gene
Protein
Ribosome
The different forms of a gene are called
traits
pollinators
alleles
hybrids
Dominant alleles are represented with a
symbol
shape
capital letter
lower cased letter
Which phrase best describes MEIOSIS?
cell division of somatic cells (normal body cells)
cell division of prokaryotic cells
cell division of gametic cells
A **substitution mutation** that has no effect on **amino acids** sequence
Insertion Mutation
Translocation
Silent Mutation
Deletion Mutation
An organism that has two different alleles for a trait; Heterozygous for a particular trait.
Homozygous
Hybrid
Purebred
Clone
Which phrase best describes cancer?
absence of cyclins
multiple gene mutations
uncontrolled cell growth
presence of genetic defects
What are genetically modified (GM) organisms and GM foods?
Foods or organisms with better taste
Foods or organisms grown in the USA, only
Foods or organisms with DNA modified in a way that doesn't occur naturally
Food and organisms that have been injected with hormones
If the diploid number of an organism is 36, how many chromosomes are found in a gamete?
36
72
18
Not enough information
What gamete possibilities could come from this parent's genotype?
AB, AB, aB, aB
Ab, AB, Ab, ab
Ab, Ab, Ab, Ab
AB, aB, ab, aB
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
0%
25%
50%
75%
How many of the offspring would have a black, smooth coat?
9
7
3
1
PAPER RECOMMENDED: A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occurs and causes the synthesis of the segment shown. Which is the new peptide chain when the new DNA segment is translated?
methionine, leucine, histidine, aspartate, glycine
methionine, phenylalanine, histidine, aspartate, glycine
Methionine, proline, histidine, aspartate, glycine
methionine, serine, histidine, aspartate, glycine
Which of the following statements about levels of biodiversity is correct?
Genetic biodiversity is a measure of the total number of genes in a community.
A narrow distribution of habitats leads to an increase in species diversity.
Global hotspots are areas where species diversity is thriving due to habitat restoration.
A population with high genetic biodiversity is better able to respond to environmental stressors.
If two parents have type AB blood, what is the probability that their child will have type O blood?
0%
25%
50%
100%
In a cross of two heterozygous parents, what proportion of the offspring will also be heterozygous?
50%
100%
0%
75%
What are the phenotype percentages of the offspring? (A-Brown fur color; a-white fur color)
50% Brown fur and 50% White fur
25% Brown fur and 75% White fur
75% Brown fur and 25% White fur
0% Brown fur and 100% White fur
A roan cow shows codominance in fur color (brown and white). What is the phenotype ratio expected in offspring if a female roan and a male roan mate together?
All four would be brown and white
Half would be orange, half would be white
2 Brown: 2 Brown and White: 0 White
1 Brown: 2 Brown and White: 1 White
(Hint: the chromosomes in...)
________ ____ increases genetic diversity.
(a)
