If you decide to buy a purebred puppy, you would have many different dog breeds to choose from. The wide variety of dog breeds is the result of hundreds of years of
Selective breeding happens
The selective breeding of wild mustard has _________ _________ and produced at least four other vegetable crops.
In some instances, humans breed animals that are close relatives to produce desired traits. This is called
The Brahman cattle have good resistance to high temperature, but its meat is poor and tough. The English shorthorn cattle have good meat, but poor resistance to high temperatures.Using ___ might get the best traits of both.
Humans often selectively breed plants to create better, more nutritious crops. Plants are not as difficult to selectively breed as animals because most plants have
Which crisis can be improved by selective breeding?
Scientists have changed the DNA of a type of cabbage so that it contains a tiny amount of poison from a scorpion’s tail. The poison in the cabbage kills caterpillars that try to eat it. This is an example of
North Carolina ranks second in production of Christmas trees in the United States. Scientists in North Carolina are developing a clone bank of disease and insect resistant trees. How would this be beneficial to Christmas tree growers?
During cell division, or mitosis, an exact duplicate of the original cell is produced. The instructions for cell division are found in the __________ in the __________.
Chromosomes, which contain DNA, have several functions. All BUT ONE of these statements is a function of chromosomes.
Your three blood cell types have different sizes, shapes, and functions. Yet they all started out alike. Within each cell of your body there are ___________, which give the instructions for cell processes including differentiation of blood cells.
Your gender, whether you are male or female, is determined by the
Your eye color, sex, and hair color are all determined by the DNA in your genes. Where are these genes located?
A _______ is a segment of a chromosome that codes for a specific protein
Scientists can alter potato plants in order to produce bigger and better potato crops. To do this, scientists alter specific ________ found in the DNA of the plants' cells.
Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. How would the discovery of the human genome contribute to this process?
Selective breeding is the process of breeding plants or animals so that they inherit particular traits from their parents. What is a possible consequence of selectively breeding a crop species?
A particular plant bears large-sized fruits. Another variety of the same plant is resistant to pests. What process should be adopted to combine the traits of the two varieties of plants?
Biotechnology has helped produce crops that are resistant to certain pests, crops that produce high yields, and more nitrogen-efficient crops. What is a negative impact that bioengineered plants may have on the environment?
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