Inheritance patterns cannot always be explained by Mendel's models of inheritance

If a pair of homologous chromosomes fails to separate during meiosis I, select the choice that shows the chromosome number of the four resulting gametes with respect to the normal haploid number (n)? A) n+1; n+1; n-1; n-1
B) n+1; n-1; n; n
C) n+1; n-1; n-1; n-1
D) n+1; n+1; n; n


A

Biology & Microbiology

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If you cross two pea plants, one with green peas and the other with yellow peas, you find all of the offspring have yellow peas. You conclude the yellow parent was

A. homozygous for the recessive allele. B. heterozygous. C. homozygous for the dominant gene. D. homozygous for the dominant allele. E. homozygous for the recessive gene.

Biology & Microbiology

Insulin and glucagon work together to maintain optimum levels of ____ in the blood

a. glycogen b. glucose c. alpha cells d. thyroxine e. digestive enzymes

Biology & Microbiology

A phenol red glucose broth with a Durham tube has been inoculated and incubated. After 48 hours, the broth is turbid and bright yellow and approximately half of the contents of the Durham tube contains bubbles. Interpret these results.

a. The organism will ferment lactose as well. b. The organism is fermenting glucose. c. The organism is an obligate anaerobe. d. The organism is fermenting lactose and producing ethanol and CO2.

Biology & Microbiology

Compare and contrast r-selected and K-selected organisms. Give examples of both plant and animal species that fit

each category. What will be an ideal response?

Biology & Microbiology