You have a pea with yellow seeds and a pea with green seeds, both from pure breeding lines. When you cross them all of the offspring have green seeds. If you cross two of the offspring, what proportion of the next generation will be heterozygotes? Assume the trait is influenced by a single locus. Group of answer choices A. 25% B. 75% C. 100% D. 50% E. 0
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You have a pea with yellow seeds and a pea with green seeds, both from pure breeding lines. When you cross them all of the offspring have green seeds. If you cross two of the offspring, what proportion of the next generation will be heterozygotes? Assume the trait is influenced by a single locus.
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- An incompletely dominant gene controls flower petal color in carnations, where R is red and W is white. If two pink carnations are crossed and produce 40 offspring, how many of these offspring would you expect to be red? A. 40 B. 0 C. 20 D. 30 E. 10In certain plants, the tall trait is dominant to the short trait. If a heterozygous plant is crossed with a homozygous short plant, what is the percentage that the offspring will be short? a. 100% b. 50% c. 25% d. 0%If one parent is heterozygous dominant for green seed color (Gg) and the other is homozygous recessive for yellow seed color (gg). What will be the percentage of the offspring would produce yellow seeds? * A. 100% B. 0% C. 50% D. 75%
- Suppose we have a pea plant that’s homozygous for round seeds (dominant) and we cross it with a plant that’s homozygous for wrinkled seeds. What genotype would the F1 generation have? Group of answer choices A. round seeds B. wrinkled seeds C. RR D. Rr E. rrYou cross two pea plants both from pure breeding lines. One has hairy leaves and the other has smooth leaves. All the offspring have hairy leaves. If you take one of the offspring (F1) and cross it back to smooth-leaved plant what phenotypic ratio do you expect in the next generation? Group of answer choices A. half smooth and half hairy B. all smooth C. all hairy D. 3/4 hairy and 1/4 smoothIn a test cross, peas of an unknown genotype are crossed with peas of a known genotype. In this example, smooth peas are the unknown and wrinkled peas are the known (rr). If half of the offspring from that cross are smooth and half are wrinkled, what is the genotype of the unknown plant? O a. Homozygous dominant: RR O b. Homozygous recessive: rr Oc. Incomplete dominance d. Heterozygous dominant: Rr CLEAR MY CHOICE
- In certain plants, red flowers are dominant to white flowers. If a heterozygous plant is crossed with a homozygous red-flowered plant, what is the probability that the offspring will be white-flowered?. Select one: O a. It depends on whether the traits are linked O b. 0% O c. 25% O d. 50% Ⓒe. 75%You cross individuals with genotypes AABb and AaBb. What is the probability of producing an offspring of type AABb Group of answer choices A. 1/2 B. 1/4 C. 1/8 D. 1/16Imagine that you are performing a cross involving seed texture in garden pea plants. You cross true-breeding round and wrinkled parents to obtain F1 offspring. Which of the following experimental results in terms of numbers of plants are closest to what you expect in the F2 progeny?a. 810 round seedsb. 810 wrinkled seedsc. 405:395 round seeds:wrinkled seedsd. 610:190 round seeds:wrinkled seeds
- Imagine that you are performing a cross involving seed color in garden pea plants. What traits would you expect to observe in the F1 offspring if you cross true-breeding parents with green seeds and yellow seeds? Yellow seed color is dominant over green. a. only yellow-green seeds b. only yellow seeds c. 1:1 yellow seeds:green seeds d. 1:3 green seeds:yellow seedsIn chickens, black feathers (B) are dominant over white feathers (b). The sex ratio of chickens is 50:50.If two offspring result from the cross between a heterozygous hen and a heterozygous rooster, what is the probability both chicks will have the same homozygous dominant genotype (BB)? Select one: a. 0.250 b. 0.0625 c. 0.125 d. 0.500A cross occurs between a black homozygous mouse and a white homozygous mouse. They produce gray offspring. Referring to the mouse scenario noted above, what is the percentage phenotypic probability if we cross two gray mice from F1 generation? a. 100% black b.75% gray; 25% white c. 25% black ; 50% gray , 25% white d. 50% black; 50% white