To enhance the efficiency of transformation, bacterial cells can be induced to take up DNA by a strong electrical field

Indicate whether the statement is true or false


TRUE

Biology & Microbiology

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Loss of function mutations are easier to study in _______ organisms, such as bacteria

A. haploid B. diploid C. triploid

Biology & Microbiology

Your father has type B blood, and your mother has type O blood. You learn that you also have blood type O. What

does this tell you?

a. You father is homozygous for type B blood. b. Your mother is heterozygous for type O blood. c. Your father's genotype is IBi and your mother's genotype is ii. d. Your father's genotype is IBIB and your mother's genotype is ii. e. Your father's genotype is IAIB and your mother's genotype is ii.

Biology & Microbiology

In aquatic habitats, the bottom zone where decomposition is most active is referred to as the ________ zone

Fill in the blank(s) with correct word

Biology & Microbiology

Despite its name, Kentucky Bluegrass is a widespread turfgrass used for lawns throughout the United States. In some regions, strains have developed desirable disease-resistant properties. However, Kentucky Bluegrass typically develops by apomixis. Plant breeders say this creates both a challenge and an opportunity for engineering novel strains. Why?

A. If a seed develops by apomixis, it will be identical to its parent. Hybridization with another strain requires special techniques. However, once a hybrid strain is developed, apomixis ensures its reliable propagation. B. In apomixis, new plants develop from underground horizontal stems. This allows for fast propagation of new strains, but all progeny are identical to the parent.  C. Plants that develop by apomixis are naturally tolerant of herbicides. As a result, herbicide tolerance genes cannot be used as selectable markers for a transgene, but herbicides can be used to keep the resulting culture pure. D. Since the progeny of apomixis are triploid, hybrids have an imbalance of parental genes. However, this may be desirable if a higher proportion of one allele is beneficial.

Biology & Microbiology