intercross

Example Sentences

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In "Cross and Self-Fertilisation," page 156, Darwin quotes the information received from Delpino and referred to in the present letter—namely, that it is the fixed opinion of the Italian gardeners that the varieties do intercross.

From More Letters of Charles Darwin — Volume 2 by Darwin, Francis, Sir

Mr. Cheeseman also remarks, that as certain Orchids in New Zealand which require insect-aid for their fertilisation bear only a single flower, distinct plants cannot fail to intercross.

From Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Darwin, Charles

Mr. Walsh ranks the forms which it may be supposed would freely intercross, as varieties; and those which appear to have lost this power, as species.

From The Origin of Species by means of Natural Selection, 6th Edition by Darwin, Charles

Both species are grown in pure form in Korea, and they intercross readily, and we do not regard it as a new species.

From Northern Nut Growers Association Report of the Proceedings at the 44th Annual Meeting Rochester, N.Y. August 31 and September 1, 1953 by Northern Nut Growers Association

Whatever the cause may be, we may conclude, that in England the varieties never or very rarely intercross.

From Effects of Cross and Self Fertilisation in the Vegetable Kingdom by Darwin, Charles