SUBSCRIBE
BIOS 105 FINAL
1. are chromosomes that are the same:
Answer autosomes
2. If the two alleles for a particular gene are identical the gene pair is:
Answer homozy- gous
- Average heights of American men and women have increased steadily since the 1940s. What
is the best explanation for this observation?:
Answer Environmental changes like improvements in diet
4. Genes that are linked are found on different chromosomes. T OR F:
Answer False
5. Hemophilia A is caused by:
Answer an X-linked recessive disorder causing a defective blood clotting
6. In humans, alleles are inherited from:
Answer males and females( one from each parent)
7. Gametes may carry different combinations of alleles because of:
Answer Crossing over and random alignment of chromosomes
8. Yellow peas are an example of:
Answer a phenotype
- If you cross two pea plants, one with green peas and the other with yellow peas. All of the
offspring have yellow peas. You conclude::
Answer Yellow is dominant over green
- Phenotype means::
Answer The observable EXPRESSION of the genes in an individ- ual 1 / 2
SUBSCRIBE
11. YY for yellow peas is an example of:
Answer A genotype for the trait of pea color
- Of all the people who studied inheritance, the person who made the most lasting
impression on the science of genetics is:
Answer gregor mendel
13. X-linked recessive disorders affect more males than females:
Answer TRUE
14. The environment can alter phenotype:
Answer TRUE
15. Mendel called a trait that is masked:
Answer RECESSIVE
- If the heterozygous phenotype is intermediate between those fot he two different
homozygotes, this is called: Incomplete dominance
- If a pea plant is heterozygous for yellow seeds Yy, which gametes could it produce?:
Answer Y and y
18. Genotype means:
Answer The combination of alleles in an individual
- If a person has a recessive allele for a disease and that allele is masked by a normal
dominant allele, this person:
Answer is termed a carrier
- When mendel crossed short (tt) pea plants with short (tt) pea plants, the offspring were
all:
Answer SHORT
21. CHAP 24:
- / 2