WorksheetsHeredity review
Total questions: 25
Worksheet time: 14mins
Genes found on chromosomes are responsible for directing the synthesis of certain proteins. These proteins are responsible for the ____________ seen in an organism.
offspring
traits
cells
chromosomes
Scarlett and Rohan are expecting a baby. Each human cell contains a total of 46 chromosomes, which are inherited from both parents during fertilization. How many chromosomes will their child receive from each parent?
46 from each parent
23 from each parent
12 from each parent
46 from one parent and none from the other
Grace is learning about how her body works. She discovers that __________ are responsible for carrying out most functions in cells and are composed of amino acids.
chromosomes
proteins
genes
lipids
Anika and Arjun are learning about how living things create offspring. They discover that a process requiring two parents whose genetic information is combined is called __________reproduction.
punnett square
proteins
traits
sexual
Elijah is studying genetics in his biology class. He learns that a gene mutation has just occurred in a population of fruit flies he is observing. Which of the following would be the most immediate result of this gene mutation in one of the fruit flies?
A change in a protein produced by the organism
Increased reproductive success of the organism
Shortened life span of the organism
Decreased need for resources by the organism
Michael and Anika are planning to have a child. In humans, curly hair is dominant (C) over straight hair (c). The Punnett square below shows a cross between Michael and Anika. What do the two letters on either side of the Punnett square represent?
The outcome of hair texture for the offspring
The allele combination that would be found on the mother’s gene
The allele combination that would be found on the father’s gene
The allele combination for each parent for the hair texture gene
Ava notices that some members of her community have difficulty with muscle coordination and brain function due to Huntington’s disease, a genetic mutation. What would most likely be observed in humans who inherit this genetic disease?
A decrease in the efficiency of cellular respiration
A change in the production of specific proteins
An increase in the speed of nerve cells
A change in the cellular membranes of muscles
Anika has a garden where she grows potatoes. Each potato plant can grow new potatoes from a single potato without needing another plant. The new potatoes are exactly like the parent potato, and all their genetic information comes from that one parent. Which of the following does this describe?
asexual reproduction
sexual reproduction
both
Which of the following best describes a gene?
A reproductive organ
A physical characteristic
A type of cell
A segment of DNA that codes for a protein
Charlotte is studying two types of plant reproduction in her biology class. She learns that one type involves two parent plants and results in offspring with different traits, while the other type involves just one parent and produces identical offspring. What is the main advantage of the first type of reproduction?
It produces identical offspring
It increases genetic diversity
It requires only one parent
It is faster
A mutation in a gene can lead to which of the following outcomes?
No change in the organism
A beneficial trait
A harmful trait
Any of the above
Which of the following best explains why offspring produced by sexual reproduction are genetically unique?
They inherit all their DNA from one parent
They inherit a combination of genes from both parents
They have no mutations in their DNA
They are produced by binary fission
Which process results in offspring that are genetically identical to the parent?
Genetic recombination
Asexual reproduction
Sexual reproduction
Cross-pollination
What is the role of chromosomes in inheritance?
They determine the physical environment of an organism
They produce energy for the cell
They carry genetic information from parents to offspring
They control the rate of mutation
How do traits like eye color and hair type get passed down from parents to their children? Scientists call this process heredity (passing genetic features from one generation to the next).
genotype
parent
heredity
offspring
Where are chromosomes found in the cell?
Mitochondria
Ribosome
Nucleus
Cytoplasm
