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Lana71 [14]
3 years ago
13

In corn, small pollen (sp) is recessive to normal pollen (sp+) and banded necrotic tissue, called zebra necrotic (zn), is recess

ive to normal tissue (zn+), The genes that produce these phenotypes are closely linked on chromosome 10, If no crossing over occurs between these two loci give the types of progeny expected from the following cross: a) sp+ zn+/sp+zn+; sp+ zn+/sp zn: sp zn/sp zn b) sp+zn/sp zn;l sp zn +/sp zn c) sp + zn/sp zn: sp zn/sp zn d) sp+zn/sp+ zn; sp + zn/sp zn+; sp zn+/sp+ zn; sp zn+/sp zn+ e) sp+ zn+/sp zn; sp+ zn/sp zn
Biology
1 answer:
Colt1911 [192]3 years ago
8 0

Answer: sp+ zn+/ sp+ zn+ ; sp+ zn+/ sp zn; sp zn / sp zn ​

Explanation: f a double heterozygote is testcrossed and gametes are produced in a ratio of 1:1:1:1, this can be interpreted as unlinked genes or as genes that are 50 map units apart. Because gametes this far apart cannot be distinguished from gametes that are unlinked, it's not possible to get a ratio of gametes that indicates a distance of greater than 50 map units.

A man and a woman are trying to have children but are unsuccessful. As part of a series of tests, the man is karyotyped. His autosomes appear normal, but his sex chromosomes, shown in the following diagram, are not. The diagram also shows a normal male's sex chromosomes for reference.

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Answer:

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Explanation:

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2 years ago
Sam looked at an image of an embryo that is a compact mass of cells. Which is the term for this embryo? A)gastrula B)zygote C)mo
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Answer:

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Explanation:

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Thus  , gastrula is the correct answer as it is the stage which comes after zygote and morula and thus get developed into more compact mass of cells.

7 0
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What name is given to elements with the same number protons but differering numbers of neutrons?
Natali5045456 [20]
~Hello there!

Your question: What name is given to elements with the same number protons but differing  numbers of neutrons?

Your answer: Istopes is the name given to the elements with the same number of protons but differing number and neutrons.

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