REVIEW & REHEARSE: 7 GENES and INHERITENCE
REVIEW & REHEARSE: 7 GENES and INHERITENCE
Q
Most genes come in alternative forms called:
- a) alleles.
- b) heterozygotes.
- c) gametes.
- d) chromosomes.
- e) homozygotes.
Traits that are determined by a single gene:
- a) occur in single-
celled organisms, but not in humans. - b) are common in humans.
- c) must occur on the X chromosome.
- d) include eye color and skin color.
- e) can have only two alleles.
Pea plants were well suited for Mendel’s breeding experiments for all of the following reasons except:
- a) Peas exhibit variations in a number of observable characteristics, such as flower color and seed shape.
- b) Mendel could control the pollination between different pea plants.
- c) It is easy to obtain large numbers of offspring from any given cross.
- d) Many of the characteristics that vary in pea plants are not linked closely on the same chromosome.
- e) Peas have a particularly long
The law of segregation states that:
- a) the transmission of genetic diseases within families is always recessive.
- b) an allele on one chromosome will always segregate from an allele on a different chromosome.
- c) gametes cannot be separate andpea plants that are equal.
- d) the number of chromosomes in a cell is always divisible by 2.
- e) the two alleles for a given trait segregate into different gametes.
