Multiple Choice
A cell that has 2 copies of each chromosome is called a __________ cell:
a) Sperm.
b) Diploid.
c) Haploid.
d) Gamete.
12. Meiosis
Genes & Alleles
Back12. Meiosis
Genes & Alleles
- Multiple Choice
Alternate forms of the same gene are called:
a) Chromatids.
b) Centromeres.
c) Chromosomes.
d) Alleles.
- Multiple Choice
All human cells, except sex cells, are diploid and have 23 pairs of chromosomes. Human sex cells, such as egg and sperm, are haploid and have _______ chromosomes.
a) 23
b) 12
c) 11.5
d) 46
- Multiple ChoiceWhat is a locus?
- Multiple ChoiceHow many genes are present in the human genome?
- Open QuestionIf an intestinal cell in a grasshopper contains 24 chromosomes, then a grasshopper sperm cell contains ___________ chromosomesa. 6b. 12c. 24d. 48
- Open QuestionWhich of the following statements correctly describe the relationship between genes and chromosomes?a. Genes are chromosomes;b. Chromosomes contain many genes;c. Genes are made up of hundreds or thousands of chromosomes;d. Genes are assorted independently during meiosis, but chromosomes are not;e. More than one of the above is correct.
- Open QuestionAn allele is a .a. version of a gene;b. dysfunctional gene;c. protein;d. spare copy of a gene;e. phenotype
- Open QuestionHow many genes are there in a human sperm cell?a. 23b. 46c. about 21,000d. about 3 billion
- Open QuestionPlant species A has a diploid chromosome number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably bea. 14.b. 16.c. 28.d. 56.
- Open QuestionIf one species (2n=10) crosses with another species (2n=18), producing an allopolyploid offspring, what is the ploidy of the offspring?a. 2n=10b. 2n=18c. 2n=10+18=28d. 4n=36 +20=56