1.
How many chromosomes do human sex cells have? (1 point)
22
43
46
23
2.
The actual genetic makeup of an organism for a particular trait is called the ______. The physical characteristic that trait gives the organisms is called the ______. (1 point)
genotype; phenotype
genome; allele
dominant; recessive
none of the above
3.
Of the following, which represents a homozygous recessive genotype?
(1 point)
TT
Tt
tt
TTT
4.
Structures in organisms that are no longer of use are called ______ structures. (1 point)
homologous
obsolete
vestigial
analogous
5.
Change in the hereditary features of a type of organism over time is ______. (1 point)
growth
biogenesis
spontaneous generation
evolution
6.
Studying the early growth and development of animals provides clues to their shared ancestry; this field of study is called ______. (1 point)
embryology
ecology
radiology
oncology
FOR #7-10: the answer choices are dominant, alleles, genetic engineering, recombinant, genes, recessive
7.
Because of ______, tomatoes can now be picked and transported great distances before they ripen. (1 point)
8.
Inserting a useful gene into the DNA of another organism is called ______ technology. (1 point)
9.
______ are different forms of a gene that codes for a certain trait. (1 point)
10.
Gregor Mendel discovered some alleles can cover up the presence of others; these alleles are called __________. (1 point)
My answers:
1. 23
2. genotype; phenotype
3. tt
4. vestigial
5. growth
6. embryology
7. genetic engineering
8. recombinant
9. alleles
10. recessive
6 answers
1 answer